Measurement  of  Gases 

where    Density    Changes 


COMPILED  BY 
HENRY  P.  WESTCOTT 

Member     A.     S.     M.     E. 

-  and 
Natural    Gas    Association 


Price  Fifty  Cents 


PUBLISHED    BY 

METRIC  METAL  WORKS 

ERIE,     PENN'A.       U.S.A. 


' 

win*"** 


COPYRIGHTED     BY 

METRIC    METAL   WORKS 

ERIE,    PA. 


w\_»nr\o 


|HE  measurement  of  natural  gas  by  meter, 
where  the  density  changes,  seems  to  present 
so  many  puz/.ling  questions  to  the  man  just 
entering  the  gas  industry,  that  we  have  thought 
it  might  be  helpful  to  give,  in  as  simple  terms 
as  possible,  and  in  so  far  as  we  are  able,  a  com- 
plete explanation  of  the  matter.  Having  always  made  it  a 
point  in  our  business  policy  to  be  helpful  to  the  gas  trade 
along  scientific  lines,  as  well  as  to  manufacture  and  sell  gas 
meters,  our  opinion  is  naturally  sought  on  many  points  per- 
taining to  the  gas  business  by  those  who  have  had  little  or 
no  experience. 

On  the  particular  "question  of  gas  measurement,  where 
the  density  changes,  we  receive  a  great  many  inquiries,  and 
in  defense  of  this  article,  can  best  illustrate  by  quoting 
extracts  of  letters  actually  received  as  follows : 

"For  information  you  will  please  advise  me 
on  a  few  points  in  regard  to  your  meters.  Would 
a  meter  working  under  a  pressure  of  less  than  fifty 
pounds,  say  twenty  pounds,  give  the  true  amount 
of  gas  registered,  or  would  the  meter  reading  have 
to  be  multiplied  by  some  number  to  arrive  at  the 
true  amount  of  gas  passing  through  it?  Say  that 
the  dial  of  the  meter  shows  60,000  cu.  ft.,  and  the 
average  pressure  was  15  pounds  for  the  twenty-four 
hours,  what  should  the  reading  be  if  not  taken  as 
shown  by  the  meter?" 


"We  have  on  our  gas  lease  a  meter  delivering 
gas  to  a  farmer,  and  my  understanding  is  that  under 
the  pressure  at  the  wells,  viz.,  45  pounds,  we  are 
delivering  more  gas  than  the  meter  shows.  Will  you 
kindly  advise  me  what  multiplier  table  should  be 
used  with  the  meter  as  shown  above?" 


"I  have  a  small  gas  plant  and  am  purchasing 
natural  gas  from  a  pipe  line  which  pipes  gas  from 
West  Virginia.  All  along,  and  up  to  the  present 
time,  my  bills,  from  them  have  been  more  than 
double  the  total  readings  of  my  meters.  The  Gas 


-using  a  multiple  basis  in 
computing  my  bills  and  this  nearly  doubles  the 
consumption  of  gas  used  as  shown  by  my  meters. 
I  need  some  help  in  this  matter  and  kindly  ask  that 
you  give  me  what  information  you  can  as  to  the 
trouble  in  my  case." 

Of  course  the  above  inquiries  show  a  lack  of  knowledge 
of  the  business  due  to  inexperience,  and  in  answering  them, 
together  with  hundreds  like  them,  we  have  had  to  give  a 
detailed  explanation  of  the  question  of  gas  density. 

The  "Rock  Pressure"  of  gas  wells  varies  according  to 
the  depth  of  the  well  and  the  length  of  time  the  well  has 
been  drilled;  likewise  the  pressure  of  the  flowing  gas  in  pipe 
lines,  meters,  regulators,  and  gates  is  extremely  variable, 
and  on  account  of  this  variation  in  pressure,  it  was  found 
necessary  to  establish  some  basis  on  which  to  sell  and  buy 
natural  gas. 

Some  years  ago  Mr.  F.  H.  Oliphant,  at  that  time  of 
the  United  States  Geological  Survey,  considered  as  a  basis 
of  natural  gas  measurement  a  pressure  of  14.65  pounds  per 
square  inch  absolute,  and  a  temperature  of  60  degrees  fahr., 
and  since  then  it  has  become  customary  for  natural  gas  men 
to  refer  their  gas  measurements  to  this  basis.  A  pressure  of 
14.65  pounds  per  square  inch  is  4  ounces  above  the  assumed 
atmospheric  pressure  of  14.4  pounds  per  square  inch,  the 
latter  being  the  average  at  about  the  elevation  of  the  Great 
Lakes,  which  elevation  was  considered  fairly  representing 
that  of  most  gas  fields. 

At  4-ounce  pressure  a  cubic  foot  of  gas  is  made  up  of  a 
certain  number  of  atoms.  In  order  to  increase  the  pressure 
in  a  cubic  foot  of  gas  confined  into  a  like  space,  it  is  neces- 
sary to  force  into  that  space  more  gas  or  more  atoms  of  gas. 
If  a  sufficient  amount  of  gas  is  forced  into  the  confined 
space,  originally  holding  a  cubic  foot  of  gas  at  4-ounce 
pressure,  to  create  15  pounds  pressure,  there  will  then  be 
twice  as  much  gas,  or  twice  as  many  atoms  of  gas  confined 
in  the  same  space. 


To  illustrate,  take  a  cylinder  of  proper  diameter  to 
contain  one  cubic  foot  of  space  for  each  foot  in  length  fitted 
with  a  tight  plunger. 


/  CU.  FT. 


2    CU.  /-7T 


If  the  plunger  in  the  cylinder  is  placed  at  the  one-foot 
mark  and  enough  gas  forced  into  the  space  to  create  a  pres- 
sure of  fifteen  pounds,  it  could  be  said  that  the  cylinder 
contained  one  cubic  foot  of  15-pound  gas.  Then  if  the 
plunger  is  withdrawn  until  it  rests  at  the  two-foot  mark  the 
gas  will  expand  and  the  pressure  will  drop  to  four  ounces 
and  the  actual  volume  contained  in  the  space  will  be  two 
cubic  feet.  In  other  words,  by  multiplying  the  cubic  con- 
tents in  the  first  cylinder  by  2  it  will  give  the  actual  amount 
of  4-ounce  gas  in  cubic  feet. 

As  all  gas  meters  in  the  factory  are  tested  and  corrected 
to  a  low  pressure  basis,  measuring  gas  by  displacement,  they 
may  be  compared  to  the  cylinder  with  the  plunger  as  illus- 
trated above.  In  measuring  gas  in  the  meter,  the  diaphragms 
contain  just  so  much  space.  If  the  pressure  of  the  gas  con- 
fined in  each  quantity  or  volume  of  gas  measured  by  the 
diaphragms  filling  and  discharging  is  four  ounces,  then  the 
meter  reading  needs  no  correction;  but  each  time  the  meter 
diaphragm  fills  and  discharges  a  volume  of  gas  at  a  higher 
pressure  than  four  ounces,  the  meter  reading  must  be  cor- 
rected by  applying  a  multiplier,  to  reduce  the  volume  of 
gas  measured  to  a  four-ounce  basis;  and  the  higher  the 


pressure  the  greater  will  be  the  density  of  the  gas  and  the 
greater  the  number  of  atoms  contained  in  each  cubic  foot  of 
space. 

A  factory  meter  measuring  gas  at  a  low  pressure  will 
only  measure  accurately  a  volume  of  low-pressure  gas  up  to 
its  rated  capacity  in  cubic  feet,  while  a  field  or  high-pressure 
meter  will  measure  accurately  a  volume  of  low-pressure  gas 
at  a  high  pressure  far  in  excess  of  the  rated  capacity  of  the 
meter,  entirely  dependent  upon  the  pressure.  For  example, 
a  10,000  cubic  foot  per  hour,  large  capacity  meter  will  meas- 
ure accurately  as  follows : 


Meter 
Reading 

Pressure 
Pounds  per 
Square  Inch 

Multiplier 

Actual  Amount  of 
Low  Pressure  Gas 
Measured 

10,000 

.25 

1.0000 

10,000 

10,000 

100.00 

7.8088 

78,088 

10,000 

200.00 

14.6348 

146,348 

The  above  figures  are  given  under  the  assumption  that 
the  meter  is  working  up  to  its  maximum  capacity,  or  10,000 
cubic  feet  per  hour  meter  reading. 

To  determine  the  proper-sized    meter  to    measure    any 
volume  the  following  rule  is  followed : 

Divide  the  volume  of  gas  to  be  measured  per  hour  by 
the  multiplier  or  density  at  which  the  gas  is  to  be  measured 
and  it  will  give  the  meter  reading  for  which  to  select  the 
proper-sized  meter. 

Example: — If  it  is  desired  to  measure  146,348  cubic 
feet  of  low-pressure  gas  per  hour  at  a  pressure  of  200  pounds 
—146,348-14.6348=10,000  cubic  feet  per  hour  meter  read- 
ing. 

The  multipliers  for  density  are  based  on  Boyle's  law 
written  in  1660,  that  the  "volume  of  a  gas  varies  inversely 
as  the  pressure." 

While  the  4-ounce  basis  is  generally  accepted  when  no 
other  pressure  basis  is  stated  in  a  buying  and  selling  agree- 
ment, some  other  basis  can  be  used  and  very  often  is  used, 
particularly  when  gas  is  being  bought  or  sold  in  large  volumes 
in  the  field. 


Formula  for  Determining  the  Quantity  of  Natural  Gas 
When  Measured  Above  Normal  Pressure — In  which 


Q=cubic  feet  required. 
g  =cubic  feet  shown  by  the  meter. 
P  ==SauSe  pressure  in  pounds. 
h  ^atmospheric  pressure  of  14.4  pounds. 
0.25=4-ounce  pressure  reduced  to  pounds. 

By  substituting  the  known  values  in  the  above  it  be- 
comes 

p  +14.4 
14.65 

For  Example: — Suppose  the  meter  or  q  reads  1,000 
cubic  feet  and  the  pressure  p  shows  32^2  pounds  to  the 
square  inch ,  required  to  find  the  quantity  of  gas  at  a  pressure 
of  four  ounces.  Then 

32  5+ 14  4 

0-1,000  -  — =3.2013  x  1000=3,201.3 

14.65 

The  result  is  therefore  3201.3  cubic  feet  at  the  standard 
pressure  of  four  ounces  to  the  square  inch. 

In  the  following  pages  we  are  pleased  to  give  a  set  of 
multiplying  tables  for  gas  measured  at  different  pressure 
bases,  each  table  based  on  some  specific  pressure  taken  as  a 
standard  and  understood  in  the  contract  between  buyer  and 
seller.  In  compiling  the  multipliers,  we  have  taken  atmos- 
pheric pressure  (which  does  not  show  on  the  gauge)  at  14.4 
pounds,  same  being  the  average  atmospheric  pressure  in  the 
natural  gas  fields,  and  temperature  of  60  degrees  fahr. 
Usually  no  correction  is  made  for  change  in  temperature  as 
60  degrees  fahr.  represents  an  average  temperature  through- 
out the  year. 


Multipliers  for  Reducing  Gas  or  Air  Volumes  or  Meter 
Readings  to  a  Pressure  Base  of  Atmospheric  Pressure 


GAUGE 
PRESSURE 
Inches  of 
Mercury 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

—25 

.14787 

17 

2.18055 

60 

5.16666 

—24 

.18196 

18 

2.25000 

61 

5.23611 

—23 

.21604 

19 

2.31944 

62 

5.30555 

—22 

.25013 

63 

5.37500 

—21 

.28421 

20 

2.38888 

64 

5.44444 

—20 

.31828 

21 

2.45833 

65 

5.51388 

—19 

.35238 

22 

2.52777 

66 

5.58333 

—18 

.38647 

23 

2.59722 

67 

5.65277 

—17 

.42055 

24 

2.66666 

68 

5.72222 

—16 

.45464 

25 

2.73611 

69 

5.79166 

26 

2.80555 

—15 

.48872 

27 

2.87500 

70 

5.86111 

—14 

.52281 

28 

2.94444 

71 

5.93055 

—13 

.55689 

29 

3.01388 

72 

6.00000 

—12 

.59098 

73 

6.06944 

—11 
—10 
-  9 

—  8 
—  7 
-  6 

.62506 
.65915 
.69323 
.72732 
.76140 
.79549 

30 
31 
32 
33 
34 
35 

3.08333 
3.15277 
3.22222 
3.29166 
3.36111 
3.43055 

74 
75 
76 
77 
78 
79 

6.13888 
6.20833 
6.27777 
6.34722 
6.41666 
6.48611 

—  5 
-  4 

.82957 
.86366 

36 
37 

QQ 

3^56944 

Q  fiQGGQ 

80 
81 

6.55555 
6.62500 

-  3 
2 

.89774 
.93183 

GO 

39 

O.DOOOO 

3.70833 

82 
83 

6.69444 
6.76388 

i 

.96591 

84 

6.83333 

Atmos. 

1.00000 

40 

3.77777 

85 

6.90277 

£* 

o  .o4  (  && 

86 

6.97222 

Lb. 
per  Sq.  In. 

42 
43 

3.91666 
3.98611 

87 
88 

7.04166 
7.11111 

1 

1.06944 

44 

4.05555 

89 

7.  18055 

2 

1.13888 

45 

4.12500 

3 

1.20833 

46 

4.19444 

90 

7.25000 

4 

1.27777 

47 

4.26388 

91 

7.31944 

5 

1.34722 

48 

4.33333 

92 

7.38888 

6 

1.41666 

49 

4.40277 

93 

7.45833 

7 

1.48611 

94 

7.52777 

8 

1.55555 

50 

4.47222 

95 

7.59722 

9 

1.62500 

51 

4.54166 

96 

7.66666 

52 

4.61111 

97 

7.73611 

10 

1.69444 

53 

4.68055 

98 

7.80555 

11 

1.76388 

54 

4.75000 

99 

7.87500 

12 

1.83333 

55 

4.81944 

13 

1.90277 

56 

4.88888 

100 

7.94444 

14 

1.97222 

57 

4.95833 

101 

8.01388 

15 

2.04166 

58 

5.02777 

102 

8.08333 

16 

2.11111 

59 

5.09722 

103 

8.15277 

— Means  "Vacuum"  or  minus  pressure. 

8 


Atmospheric  Pressure  Multipliers — (Continued) 


GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
3er  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

104 

8.22222 

137 

10.51388 

170 

12.80555 

105 

8.29166 

138 

10.58333 

171 

12.87500 

106 

8.36111 

139 

10.65277 

172 

12.94444 

107 

8.43055 

173 

13.01388 

108 

8.50000 

140 

10.72222 

174 

13.08333 

109 

8.56944 

141 

10.79166 

175 

13.15277 

142 

10.86111 

176 

13.22222 

110 

8.63888 

143 

10.93055 

177 

13.29166 

111 

8.70833 

144 

11.00000 

178 

13.36111 

112 

8.77777 

145 

11.06944 

179 

13.43055 

113 

8.84722 

146 

11.13888 

114 

8.91666 

147 

11.20833 

180 

13.50000 

115 

8.98611 

148 

11.27777 

181 

13.56944 

116 

9.05555 

149 

11.34722 

182 

13.63888 

117 

9.12500 

183 

13.70833 

118 

9.91444 

150 

11.41666 

184 

13.77777 

119 

9.26388 

151 

11.48611 

185 

13.84722 

152 

11.55555 

186 

13.91666 

120 

9.33333 

153 

11.62500 

187 

13.98611 

121 

9.40277 

154 

11.69444 

188 

14.05555 

122 

9.47222 

155 

11.76388 

189 

14.12500 

123 

9.54166 

156 

11.83333 

124 

9.61111 

157 

11.90277 

190 

14.19444 

125 

9.68055 

158 

11.97222 

191 

14.26388 

126 

9.75000 

159 

12.04166 

192 

14.33333 

127 

9.81944 

193 

14.40277 

128 

9.88888 

160 

12.11111 

194 

14.47222 

129 

9.95833 

161 

12.18055 

195 

14.54166 

162 

12.25000 

196 

14.61111 

130 

10.02777 

163 

12.31944 

197 

14.68055 

131 

10.09722 

164 

12.38888 

198 

14.75000 

132 

10.16666 

165 

12.45833 

199 

14.81944 

133 

10.23611 

166 

12.52777 

134 

10.30555 

167 

12.59722 

200 

14.88888 

135 

10.37500 

168 

12.66666 

i 

136 

10.44444 

169 

12.73611 

Multipliers  for  Reducing  Gas  Volumes  or  Meter  Readings  to 
a  Pressure  Base  of  2  Ounces  Above  Atmospheric  Pressure. 


GAUGE 
PRESSURE 
Inches  of 
Mercury 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

-25 

.14660 

16 

2.09294 

60 

5.12220 

-24 

.18039 

17 

2.16178 

61 

5.19104 

-23 

.21418 

18 

2.23063 

62 

5.25989 

-22 

.24798 

19 

2.29948 

63 

5.32874 

-21 

.28177 

64 

5.39759 

-20 

.31556 

20 

2.36833 

65 

5.46643 

-19 

.34935 

21 

2.43717 

66 

5.53528 

-18 

.38314 

22 

2.50602 

67 

5.60413 

-17 

.41693 

23 

2.57487 

68 

5.67297 

-16 

.45073 

24 

2.64371 

69 

5.74182 

25 

2.71256 

-15 

.48452 

26 

2.78141 

70 

5.81067 

-14 

.51831 

27 

2.85025 

71 

5.87951 

-13 

.55210 

28 

2.91910 

72 

5.94836 

-12 

.58590 

29 

2.98795 

73 

6.01721 

-11 

.61970 

74 

6.08605 

-10 

.65348 

30 

3.05679 

75 

6.15490 

-  9 

.68727 

31 

3.12564 

76 

6.22375 

-  8 

.72107 

32 

3.19449 

77 

6.29259 

—  7 

.75485 

33 

3.26333 

78 

6.36144 

-  6 

.78865 

34 

3.33218 

79 

6.43029 

35 

3.40103 

-  5 

.82244 

36 

3.46987 

80 

6.49913 

-  4 

.85623 

37 

3.53872 

81 

6.56798 

-  3 

.89002 

38 

3.60757 

82 

6.63683 

2 

.92381 

39 

3.67641 

83 

6.70567 

^ 

.95760 

84 

6.77452 

Atmos. 

.99139 

40 

3.74526 

85 

6.84337 

41 

3.81411 

86 

6.91222 

Lb. 

r>           f 

42 

3.88296 

87 

6.98106 

per  Sq.  In. 

43 

3.95180 

88 

7.04991 

2oz. 

1.00000 

44 

4.02065 

89 

7.11876 

1  Ib. 

1.06024 

45 

4.08950 

2 

1.12908 

46 

4.15834 

90 

7.18760 

,       3 

1.19793 

47 

4.22719 

91 

7.25645 

4 

1.26678 

48 

4.29604 

92 

7.32530 

5 

1.33562 

49 

4.36488 

93 

7.39414 

6 

1.40447 

94 

7.46299 

7 

1.47332 

50 

4.43373 

95 

7.53184 

8 

1.54216 

51 

4.50258 

96 

7.60068 

9 

1.61101 

52 

4.57142 

97 

7.66953 

53 

4.64027 

98 

7.73838 

10 

1.67986 

54 

4.70912 

99 

7.80722 

11 

1.74870 

55 

4.77796 

12 

1.81755 

56 

4.84681 

100 

7.87607 

13 

1.88640 

57 

4.91566 

101 

7.94492 

14 

1.95524 

58 

4.98450 

102 

8.01376 

15 

2.02409 

59 

5.05335 

103 

8.08261 

• — Means  "Vacuum"  or  minus  pressure. 

10 


2-Ounce  Multipliers — (Continued) 


GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

104 

8,15146 

148 

11.18072 

191 

14.14113 

105 

8.22030 

149 

11.24956 

192 

14.20998 

106 

8.28915 

193 

14.27882 

107 

8.35800 

150 

11.31841 

194 

14.34767 

108 

8.42685 

151 

11.38726 

195 

14.41652 

109 

8.49569 

152 

11.45611 

196 

14.48537 

153 

11.52495 

197 

14.55421 

110 

8.56454 

154 

11.59380 

198 

14.62306 

111 

8.63339 

155 

11.66265 

199 

14.69191 

112 

8.70223 

156 

11.73149 

113 

8.77108 

157 

11.80034 

200 

14.76075 

114 

8.83993 

158 

11.86919 

201 

14.82960 

115 

8.90877 

159 

11.93803 

202 

14.89845 

116 

8.97762 

203 

14.96729 

117 

9.04647 

160 

12.00688 

204 

15.03614 

118 

9.11531 

161 

12.07573 

205 

15.10499 

119 

9.18416 

162 

12.14457 

206 

15.17383 

163 

12.21342 

207 

15.24268 

120 

9.25301 

164 

12.28227 

208 

15.31153 

121 

9.32185 

165 

12.35111 

209 

15.38037 

122 

9.39070 

166 

12.41996 

123 

9.45955 

167 

12.48881 

210 

15.44922 

124 

9.52839 

168 

12.55765 

211 

15.51807 

125 

9.59724 

169 

12.62650 

212 

15.58691 

126 

9.66609 

213 

15.65576 

127 

9.73493 

170 

12.69535 

214 

15.72461 

128 

9.80378 

171 

12.76419 

215 

15.79345 

129 

9.87263 

172 

12.83304 

216 

15.86230 

173 

12.90189 

217 

15.93115 

130 

9.94148 

174 

12.97073 

218 

16.00000 

131 

10.01032 

175 

13.03958 

219 

16.06884 

132 

10.07917 

176 

13.10843 

133 

10.14802 

177 

13.17728 

220 

16.13769 

134 

10.21686 

178 

13.24612 

221 

16.20654 

135 

10.28571 

179 

13.31497 

222 

16.27538 

136 

10.35456 

223 

16.34423 

137 

10.42340 

180 

13.38382 

224 

16.41308 

138 

10.49225 

181 

13.45266 

225 

16.48192 

139 

10.56110 

182 

13.52151 

226 

16.55077 

183 

13.59036 

227 

16.61962 

140 

10.62994 

184 

13.65920 

228 

16.68846 

141 

10.69879 

185 

13.72805 

229 

16.75731 

142 

10.76764 

186 

13.79690 

143 

10.83648 

187 

13.86574 

230 

16.82616 

144 

10.90533 

188 

13.93459 

231 

16.89500 

145 

10.97418 

189 

14.00344 

232 

16.96385 

146 

11.04302 

233 

17.03270 

147 

11.11187 

190 

14.07228 

234 

17.10154 

11 


2-Ounce  Multipliers —(Con linued) 


GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Densit 

I    GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

235 

17.17039 

279 

20.19965 

322 

23.16006 

236 

17.23924 

323 

23.22891 

237 

17.30808 

280 

20.26850 

324 

23.29776 

238 

17.37693 

281 

20.33734 

325 

23.36660 

239 

17.44578. 

282 

20.40619 

326 

23.43545 

283 

20.47504 

327 

23.50430 

240 

17.51462 

284 

20.54388 

328 

23.57314 

241 

17.58347 

285 

20.61273 

329 

23.64199 

242 

17.65232 

286 

20.68158 

243 

17.72117 

287 

20.75043 

330 

23.71084 

244 

17.79001 

288 

20.81927 

331 

23.77968 

245 

17.85886 

289 

20.88812 

332 

23.84853 

246 

17.92771 

333 

23.91738 

247 

17.99655 

290 

20.95697 

334 

23.98623 

248 

18.06540 

291 

21.02581 

335 

24.05507 

249 

18.13425 

292 

21.09466 

336 

24.12392 

293 

21.16351 

337 

24.19277 

250 

18.20309 

294 

21.23235 

338 

24.26161 

251 

18.27194 

295 

21.30120 

339 

24.33046 

252 

18.34079 

296 

21.37005 

253 

18.40963 

297 

21.43889 

340 

24.39931 

254 

18.47848 

298 

21.50774 

341 

24.46815 

255 

18.54733 

299 

21.57659 

342 

24.53700 

256 

18.61617 

343 

24.60585 

257 

18.68502 

300 

21.64543 

344 

24.67469 

258 

18.75387 

301 

21.71428 

345 

24.74354 

259 

18.82271 

302 

21.78313 

346 

24.81239 

303 

21.85197 

347 

24.88123 

260 

18.89156 

304 

21.92082 

348 

24.95008 

261 

18.96041 

305 

21.98967 

349 

25.01893 

262 

19.02925 

306 

22.05851 

263 

19.09810 

307. 

22.12736 

350 

25.08777 

264 

19.16695 

308 

22.19621 

351 

25.15662 

265 

19.23580 

309 

22.26505 

352 

25.22547 

266 

19.30464 

353 

25.29431 

267 

19.37349 

310 

22.33390 

354 

25.36316 

268 

19.44234 

311 

22.40275 

355 

25.43201 

269 

19.51118 

312 

22.47160 

356 

25.50086 

313 

22.54044 

357 

25.56970 

270 

19.58003 

314 

22.60929 

358 

25.63855 

271 

19.64888 

315 

22.67814 

359 

25.70740 

272 

19.71772 

316 

22.74698 

273 

19.78657 

317 

22.81583 

360 

25.77624 

274 

19.85542 

318 

22.88468 

361 

25.84509 

275 

19.92426 

319 

22.95352 

362 

25.91394 

276 

19.99311 

363 

25.98278 

277 

20.06196 

320 

23.02237 

364 

26.05163 

278 

20.13080 

321 

23.09122 

365 

26.12048 

12 


2-Ounce  Multipliers — (Continued) 


GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

366 

26.18932 

411 

29.28743 

456 

32.38554 

367 

26.25817 

412 

29.35628 

457 

32.45438 

368 

26.32702 

413 

29.42512 

458 

32.52323 

369 

26.39586 

414 

29.49397 

459 

32.59208 

415 

29.56282 

370 

26.46471 

416 

29.63166 

460 

32.66092 

371 

26.53356 

417 

29.70051 

461 

32.72977 

372 

26.60240 

418 

29.76936 

462 

32.79862 

373 

26.67125 

419 

29.83820 

463 

32.86746 

374 

26.74010 

464 

32.93631 

375 

26.80894 

420 

29.90705 

465 

33.00516 

376 

26.87779 

421 

29.97590 

466 

33.07400 

377 

26.94664 

422 

30.04475 

467 

33.14285 

378 

27.01549 

423 

30.11359 

468 

33.21170 

379 

27.08433 

424 

30.18244 

469 

33.28055 

425 

30.25129 

380 

27.15318 

426 

30.32013 

470 

33.34939 

381 

27.22203 

427 

30.38898 

471 

33.41824 

382 

27.29087 

428 

30.45783 

472 

33.48709 

383 

27.35972 

429 

30.52667 

473 

33.55593 

384 

27.42857 

474 

33.62478 

385 

27.49741 

430 

30.59552 

475 

33.69363 

386 

27.56626 

431 

30.66437 

476 

33.76247 

387 

27.63511 

432 

30.73321 

477 

33.83132 

388 

27.70395 

433 

30.80206 

478 

33.90017 

389 

27.77280 

434 

30.87091 

479 

33.96901 

390 
391 
392 
393 
394 

27.84165 
27.91049 
27.97934 
28.04819 
28.11703 

435 
436 
437 
438 
439 

30.93975 
31.00860 
31.07745 
31.14629 
31.21514 

480 
481 
482 
483 
484 

34.03786 
34.10671 
34.17555 
34.24440 
34.31325 

395 
396 
397 
398 
399 

28.18588 
28.25473 
28.32357 
28.39242 
28.46127 

440 
441 

442 
443 
444 

31.28399 
31.35283 
31.42168 
31.49053 
31.55937 

485 
486 
487 
488 
489 

34.38209 
34.45094 
34.51979 
34.58863 
34.65748 

400 

28.53012 

445 

31.62822 

490 

34.72633 

401 

28.59896 

446 

31.69707 

491 

34.79518 

402 

28.66781 

447 

31.76592 

492 

34.86402 

403 

28.73666 

448 

31.83476 

493 

34.93287 

404 

28.80550 

449 

31.90361 

494 

35.00172 

405 

28.87435 

495 

35.07056 

406 

28.94320 

450 

31.97246 

496 

35.13941 

407 

29.01204 

451 

32.04130 

497 

35.20826 

408 

29.08089 

452 

32.11015 

498 

35.27710 

409 

29.14974 

453 

32.17900 

499 

35.34595 

454 

32.24784 

410 

29.21858 

455 

32.31669 

500 

35.41480 

Multipliers  for  Reducing  Gas  Volumes  or  Meter  Readings  to 
a  Pressure  Base  of  4  Ounces  Above  Atmospheric  Pressure. 


GAUGE 
PRESSURE 

Inches  of 
Mercury 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 

per  Sq.  In. 

Multiplier 
or 
Density 

-25 

.14535 

8 

1.52901 

30 

3.03071 

-24 

.17885 

83/2 

1.56313 

303/2 

3.06484 

-23 

.21236 

9 

1.59726 

31 

3.09879 

-22 

.24586 

9.^2 

1.63139 

313^ 

3.13310 

-21 

.27936 

32 

3.16723 

-20 

.31287 

10 

1.66552 

32y2 

3.20136 

-19 

.34637 

103/2 

1.69965 

33 

3.23549 

-18 

.37987 

11 

1.73378 

333/3 

3.26962 

-17 

.41338 

113/2 

1.76791 

34 

3.30375 

-16 

.44688 

12 

1.80204 

343/3 

3.33788 

123/2 

1.83617 

-15 

.48038 

13 

1.87030 

35 

3.37201 

-14 

.51389 

13>3 

1.90443 

353/2 

3.40614 

-13 

.54739 

14 

1.93856 

36 

3.44027 

-12 

.58090 

143-3 

1.97269 

36>3 

3.47440 

-11 

.61440 

37 

3.50853 

-10 

.64790 

15 

2.00682 

373-3 

3.54266 

-  9 

.68141 

153-3 

2.04095 

38 

3.57679 

-  8 

.71491 

16 

2.07508 

383/2" 

3.61092 

-  7 

.74841 

16J-3 

2.10921 

39 

3.64505 

-  6 

.78191 

17  " 

2.14334 

393/3 

3.67918 

17/-3 

2.17747 

-  5 

.81542 

18 

2.21160 

40 

3.71331 

-  4 

.84892 

183-3 

2.24573 

403/3 

3.74744 

-  3 

.88242 

19 

2.27986 

41 

3.78156 

-  2 

.91593 

193-3 

2.31399 

413-3 

3.81569 

-  1 

.94943 

42 

3.84982 

Atmos. 

.98293 

20 

2.34812 

423/2 

3.88395 

T  h 

203/2 

2.38225 

43 

3.91808 

L/D. 

21 

2.41638 

43i/^ 

3.95221 

per  Sq.  In. 

21>3 

2.45051 

44 

3.98634 

OM 

1.00000 

22 

2.48464 

4^02047 

1.01706 

223/2 

2.51877 

\ 

1.05119 

23 

2.55290 

45 

4.05460 

1J/2 

1.08532 

23l/2 

2.58703 

453/2 

4.08873 

2 

1.11945 

24 

2.62116 

46 

4.12286 

2!/2 

1.15358 

243/2 

2.65528 

463/2 

4.15699 

3 

1.18771    1 

47 

4.19112 

31/2 

1.22184 

25 

2.68941 

471/2 

4.22525 

4' 

1.25597 

253/2 

2.72354 

48 

4.25938 

43/2 

1.29010 

26 

2.75767 

48>3 

4.29351 

263/2 

2.79180 

49 

4.32764 

5 

1.32423 

27 

2.82593 

49?  -u 

4.36177 

5l/2 

1.35836 

27y2 

2.86006 

6 

1.39249 

28 

2.89419 

50 

4.39590 

63-2 

1.42662 

283/9 

2.92832 

503-3 

4.43003 

7 

1.46075 

29  " 

2.96245 

51 

4.46416 

73/2 

1.49488 

293/2 

2.99658 

5V/2 

4.49829 

— Means   "Vacuum"   or   minus   pressure. 

14 


4-Ounce  Multipliers — (Continued) 


GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

52 

4.53242 

74 

6.03412 

953^ 

7.50170 

52^ 

4.56655 

74^ 

6.C6825 

96 

7.53583 

53 

4.60068 

96^ 

7.56996 

58^ 

4.63481 

75 

6.10238 

97 

7.60409 

54  - 

4.66894 

75^2 

6.13651 

97>i 

7.63822 

54}^ 

4.70307 

76 

6.17064 

98 

7.67235 

76J/2 

6.20477 

98^ 

7.70648 

55 

4.73720 

77 

6.23890 

99 

7.74061 

55^ 

4.77133 

77^ 

6.27303 

99^ 

7.77474 

56 

4.80546 

78 

6.30716 

56i/i 

4.83959 

78K 

6.34129 

100 

7.80887 

57 

4.87372 

79 

6.37542 

101 

7.87713 

57^ 

4.90784 

79^ 

6.40955 

102 

7.94539 

58 

4.94197 

103 

8.01365 

58^ 

4.97610 

80 

6.44368 

104 

8.08191 

59 

5.01023 

80^ 

6.47781 

105 

8.15107 

59J^ 

5.04436 

81 

6.51194 

106 

8.21843 

siy2 

6.54607 

107 

8.28668 

60 

5.07849 

82 

6.58020 

108 

8.35494 

60^ 

5.11262 

&2y2 

6.61433 

109 

8.42320 

61 

5.14675 

83 

6.64846 

61^2 

5.18088 

83^ 

6.68259 

110 

8.49146 

62 

5.21501 

84 

6.71672 

111 

8.55972 

62^ 

5.24914 

841/2 

6.75085 

112 

8.62798 

63 

5.28327 

113 

8.69624 

63>i 

5.31740 

85 

6.78498 

114 

8.76450 

64 

5.35153 

85K' 

6.81911 

115 

8.83276 

64^ 

5.38566 

86 

6.85324 

116 

8.90102 

86^ 

6.88737 

117 

8.96928 

65 

5.41979 

87 

6.92150 

118 

9.03754 

65^ 

5.45392 

87^ 

6.95563 

119 

9.10580 

66 

5.48805 

88 

6.98976 

66^ 

5.52218 

881/2 

7.C2389 

120 

9.17406 

67 

5.55631 

89 

7.05802 

121 

9.24232 

67^ 

5.59044 

89i/2 

7.09215 

122 

9.31058 

68 

5.62457 

123 

9.37883 

68X2 

5.65870 

90 

7.12627 

124 

9.44709 

69 

5.69283 

90^ 

7.16040 

125 

9.51535 

693/2 

5.72696 

91 

7.19453 

126 

9.58361 

91^ 

7.22866 

127 

9.65187 

70 

5.76109 

92 

7.26279 

128 

9.72013 

70i/2 

5.79522 

92y2 

7.29692 

129 

9.78839 

71 

5.82935 

93 

7.33105 

71M 

5.86348 

93^ 

7.36518 

130 

9.85665 

72 

5.89761 

94 

7.39931 

131 

9.92491 

72^ 

5.93174 

94^ 

7.43344 

132 

9.99317 

73 

5.96587 

133 

10.06143 

73^ 

6.00000 

95 

7.46757 

134 

10.12969 

15 


4-Ounce  Multipliers — (Continued) 


GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

135 

10.19795 

179 

13.20136 

222 

16.13651 

136 

10.26621 

223 

16.20477 

137 

10.33447 

180 

13.26962 

224 

16.27303 

138 

10.40273 

181 

13.33788 

225 

16.34129 

139 

10.47098 

182 

13.40614 

226 

16.40955 

183 

13.47440 

227 

16.47781 

140 

10.53924 

184 

13.54266 

228 

16.54607 

141 

10.60750 

185 

13.61092 

229 

16.61433 

142 

10.67576 

186 

13.67918 

143 

10.74402 

187 

13.74744 

230 

16.68259 

144 

10.81228 

188 

13.81569 

231 

16.75085 

145 

10.88054 

189 

13.88395 

232 

16.81911 

146 

10.94880 

233 

16.88737 

147 

11.01706 

190 

13.95221 

234 

16.95563 

148 

11.08532 

191 

14.02047 

235 

17.02389 

149 

11.15358 

192 

14.08873 

236 

17.09215 

193 

14.15699 

237 

17.16040 

150 

11.22184 

194 

14.22525 

238 

17.22866 

151 

11.29010 

195 

14.29351 

239 

17.29692 

152 

11.35836 

196 

14.36177 

153 

11.42662 

197 

14.43003 

240 

17.36518 

154 

11.49488 

198 

14.49829 

241 

17.43344 

155 

11.56313 

199 

14.56655 

242 

17.50170 

156 

11.63139 

243 

17.56996 

157 

11.69965 

200 

14.63481 

244 

17.63822 

158 

11.76791 

201 

14.70307 

245 

17.70648 

159 

11.83617 

202 

14.77133 

246 

17.77474 

203 

14.83959 

247 

17.84300 

160 

11.90443 

204 

14.90784 

248 

17.91126 

161 

11.97269 

205 

14.97610 

249 

17.97952 

162 

12.04095 

206 

15.04436 

163 

12.10921 

207 

15.11262 

250 

18.04778 

164 

12.17747 

208 

15.18088 

251 

18.11604 

165 

12.24573 

209 

15.24914 

252 

18.18430 

166 

12.31392 

253 

18.25255 

167 

12.38225 

210 

15.31740 

254 

18.32081 

168 

12.45051 

211 

15.38566 

255 

18.38907 

169 

12.51877 

212 

15.45392 

256 

18.45733 

213 

15.52218 

257 

18.52559 

170 

12.58703 

214 

15.59044 

258 

18.59385 

171 

12.65529 

215 

15.65870 

259 

18.66211 

172 

12.72354 

216 

15.72696 

173 

12.79180 

217 

15.79522 

260 

18.73037 

174 

12.86006 

218 

15.86348 

261 

18.79863 

175 

12.92832 

219 

15.93174 

262 

18.86689 

176 

12.99658 

263 

18.93515 

177 

13.06484 

220 

16.00000 

264 

19.00341 

178 

13.13310 

221 

16.06825 

265 

19.07167 

16 


4-Ounce  Multipliers — (Continued) 


GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

266 

19.13993 

310 

22.14334 

354 

25.14675 

267 

19.20819 

311 

22.21160 

355 

25.21501 

268 

19.27645 

312 

22.27986 

356 

25.28327 

269 

19.34470 

313 

22.34812 

357 

25.35153 

314 

22.41638 

358 

25.41979 

270 

19.41296 

315 

22.48464 

359 

25.48805 

271 

19.48122 

316 

22.55290 

272 

19.54948 

317 

22.62116 

360 

25.55631 

273 

19.61774 

318 

22.68941 

361 

25.62457 

274 

19.68600 

319 

22.75767 

362 

25.69283 

275 

19.75426 

363 

25.76109 

276 

19.82252 

320 

22.82593 

364 

25.82935 

277 

19.89078 

321 

22.89419 

365 

25.89761 

278 

19.95904 

322 

22.96245 

366 

25.96587 

279 

20.02730 

323 

23.03071 

367 

26.03412 

324 

23.09897 

368 

26.10238 

280 

20.09556 

325 

23.16723 

369 

26.17064 

281 

20.16382 

326 

23.23549 

282 

20.23208 

327 

23.30375 

370 

26.23890 

283 

20.30034 

328 

23.37201 

371 

26.30716 

284 

20.36860 

329 

23.44027 

372 

26.37542 

285 

20.43685 

373 

26.44368 

286 

20.50511 

330 

23.50853 

374 

26.51194 

287 

20.57337 

331 

23.57679 

375 

26.58020 

288 

20.64163 

332 

23.64505 

376 

26.64846 

289 

20.70989 

333 

23.71331 

377 

26.71672 

334 

23.78156 

378 

26.78498 

290 

20.77815 

335 

23.84982 

379 

26.85324 

291 

20.84641 

336 

23.91808 

292 

20.91467 

337 

23.98634 

380 

26.92150 

293 

20.98293 

338 

24.05460 

381 

26.98976 

294 

21.05119 

339 

24.12286 

382 

27.05802 

295 

21.11945 

383 

27.12627 

296 

21.18771 

340 

24.19112 

384 

27.19453 

297 

21.25597 

341 

24.25938 

385 

27.26279 

298 

21.32423 

342 

24.32764 

386 

27.33105 

299 

21.39249 

343 

24.39590 

387 

27.39931 

344 

24.46416 

388 

27.46757 

300 

21.46075 

345 

24.53242 

389 

27.53583 

301 

21.52901 

346 

24.60068 

302 

21.59726 

347 

24.66894 

390 

27.60409 

303 

21.66552 

348 

24.73720 

391 

27.67235 

304 

21.73378 

349 

24.80546 

392 

27.74061 

305 

21.80204 

393 

27.80887 

306 

21.87030 

350 

24.87371 

394 

27.87713 

307 

21.93856 

351 

24.94197 

395 

27.94539 

308 

22.00682 

352 

25.01023 

396 

28.01365 

309 

22.07508 

353 

25.07849 

397 

28.08191 

17 


1-Ounce  Multipliers — (Continued) 


GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

398 

28.15017 

432 

30.47098 

467 

32.86006 

399 

28.21842 

433 

30.53924 

468 

32.92832 

434 

30.60750 

469 

32.99658 

400 

28.28668 

435 

30.67576 

401 

28.35494 

436 

30.74402 

470 

33.06484 

402 

28.42320 

437 

30.81228 

471 

33.13310 

403 

28.49146 

438 

30.88054 

472 

33.20136 

404 

28.55972 

439 

30.94880 

473 

33.26962 

405 

28.62798 

474 

33.33788 

406 

28.69624 

440 

31.01706 

475 

33.40614 

407 

28.76450 

441 

31.08532 

476 

33.47440 

408 

28.83276 

442 

31.15358 

477 

33.54266 

409 

28.90102 

443 

31.22184 

478 

33.61092 

444 

31.29010 

479 

33.67918 

410 

28.96928 

445 

31.35836 

411 

29.03754 

446 

31.42662 

480 

33.74743 

412 

29.10580 

447 

31.49488 

481 

33.81569 

413 

29.17406 

448 

31.56313 

482 

33.88395 

414 

29.24232 

449 

31.63139 

483 

33.95221 

415 

29.31057 

484 

34.02047 

416 

29.37883 

450 

31.69965 

485 

34.08873 

417 

29.44709 

451 

31.76791 

486 

34.15699 

418 

29.51535 

452 

31.83617 

487 

34.22525 

419 

29.58361 

453 

31.90443 

488 

34.29351 

454 

31.97269 

489 

34.36177 

420 

29.65187 

455 

32.04095 

421 

29.72013 

456 

32.10921 

490 

34.43003 

422 

29.78839 

457 

32.17747 

491 

34.49829 

423 

29.85665 

458 

32.24573 

492 

34.56655 

424 

29.92491 

459 

32.31399 

493 

34.63481 

425 

29.99317 

494 

34.70307 

426 

30.06143 

460 

32.38225 

495 

34.77133 

427 

30.12969 

461 

32.45051 

496 

34.83959 

428 

30.19795 

462 

32.51877 

497 

34.90784 

429 

30.26621 

463 

32.58703 

498 

34.97610 

464 

32.65528 

499 

35.04436 

430 

30.33447 

465 

32.72354 

431 

30.40273 

466 

32.79180 

500 

35.11262 

18 


Multipliers  for  Reducing  Gas  Volumes  or  Meter  Readings  to 
a  Pressure  Base  of  6  Ounces  Above  Atmospheric  Pressure 


GAUGE 
PRESSURE 

! 

Multiplier 

GAUGE 
PRESSURE 

Multiplier 

GAUGE 
PRESSURE 

Multiplier 

Inches  of 
Mercury 

or 
Density 

Lb. 
per  Sq.  In. 

or 
Density 

Lb. 
per  Sq.  In. 

or 
Density 

-25 

.14412 

16 

2.05752 

60 

5.03553 

-24 

.17734 

17 

2.12521 

61 

5.10321 

-23 

.21056 

18 

2.19289 

62 

5.17089 

-22 

.24378 

19 

2.26057 

63 

5.23857 

-21 

.27700 

64 

5.30626 

-20 

.31022 

20 

2.32825 

65 

5.37394 

-19 

.34344 

21 

2.39593 

66 

5.44162 

-18 

.37666 

22 

2.46362 

67 

5.50930 

-17 

.40988 

23 

2.53130 

68 

5.57698 

-16 

.44310 

24 

2.59898 

69 

5.64467 

25 

2.66666 

-15 

.47632 

26 

2.73434 

70 

5.71235 

-14 

.50954 

27 

2.80203 

71 

5.78003 

-13 

.54276 

28 

2.86971 

72 

5.84771 

-12 

.57598 

29 

2.93739 

73 

5.91539 

-11 

.60920 

74 

5.98307 

-10 

.64242 

30 

3.00507 

75 

6.05076 

-  9 

.67564 

31 

3.07275 

76 

6.11844 

-  8 

.70886 

32 

2.14043 

77 

6.18612 

-  7 

.74208 

33 

3.20812 

78 

6.25380 

-  6 

.77530 

34 

3.27580 

79 

6.32148 

35 

3.34348 

__  5 

.80852 

36 

3.41116 

80 

6.38917 

-  4 

.84174 

37 

3.47884 

81 

6.45685 

-  3 

.87496 

38 

3.54653 

82 

6.52453 

-  2 

.90817 

39 

3.61421 

83 

6.59221 

-  1 

.94140 

84 

6.65989 

Atmos. 

.97461 

40 

3.68189 

85 

6.72758 

T  K 

41 

3.74957 

86 

6.79526 

L,O. 

42 

3.81725 

87 

6.86294 

per  Sq.  In. 

43 

3.88494 

88 

6.93062 

60z. 

1.00000 

44 

3.95262 

89 

6.99830 

ILb. 

1.04230 

45 

4.02030 

2 

1.10998 

46 

4.08798 

90 

7.06598 

3 

1.17766 

47 

4.15566 

91 

7.13367 

4 

1.24534 

48 

4.22335 

92 

7.20135 

5 

1.31302 

49 

4.29103 

93 

7.26903 

6 

1.38071 

94 

7.33671 

7 

1.44839 

50 

4.35871 

95 

7.40439 

8 

1.51607 

51 

4.42639 

96 

7.47208 

9 

1.58375 

52 

4.49407 

97 

7.53976 

53 

4.56175 

98 

7.60744 

10 

1.65143 

54 

4.62944 

99 

7.67512 

11 

1.71912 

55 

4.69712 

12 

1.78680 

56 

4.76480 

ICO 

7.74280 

13 

1.85448 

57 

4.83248 

101 

7.81049 

14 

1.92216 

58 

4.90016 

102        1      7.87817 

15 

1.98984 

59 

4.96785 

103 

7.94585 

— Means  "Vacuum"'  or  mixed  pressure. 

19 


6-Ounce  Multipliers — (Continued) 


GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

104 

8.01353 

148 

10.99153 

191 

13.90186 

105 

8.08121 

149 

11.05922 

192 

13.96954 

106 

8.14890 

193 

14.03722 

107 

8.21658 

150 

11.12690 

194 

14.10490 

108 

8.28426 

151 

11.19458 

195 

14.17258 

109 

8.35194 

152 

11.26226 

196 

14.24027 

153 

11.32994 

197 

14.30795 

110 

8.41962 

154 

11.39763 

198 

14.37563 

111 

8.48730 

155 

11.46531 

199 

14.44331 

112 

8.55499 

156 

11.53299 

113 

8.62267 

157 

11.60067 

200 

14.51099 

114 

8.69035 

158 

11.66835 

201 

14.57868 

115 

8.75803 

159 

11.73604 

202 

14.64636 

116 

8.82571 

203 

14.71404 

117 

8.89340 

160 

11.80372 

204 

14.78172 

118 

8.96108 

161 

11.87140 

205 

14.84940 

119 

9.02876 

162 

11.93908 

206 

14.91708 

163 

12.00676 

207 

14.98477 

120 

9.09644 

164 

12.07445 

208 

15.05245 

121 

9.16412 

165 

12.14213 

209 

15.12013 

122 

9.23181 

166 

12.20981 

123 

9.29949 

167 

12.27749 

210 

15.18781 

124 

9.36717 

168 

12.34517 

211 

15.25549 

125 

9.43485 

169 

12.41285 

212 

15.32318 

126 

9.50253 

213 

15.39086 

127 

9.57021 

170 

12.48054 

214 

15.45854 

128 

9.63790 

171 

12.54822 

215 

15.52622 

129 

9.70558 

172 

12.61590 

216 

15.59390 

173 

12.68358 

217 

15.66159 

130 

9.77326 

174 

12.75126 

218 

15.72927 

131 

9.84094 

175 

12.81895 

219 

15.79695 

132 

9.90862 

176 

12.88663 

133 

9.97631 

177 

12.95431 

220 

15.86463 

134 

10.04399 

178 

13.02199 

221 

15.93231 

135 

10.11167 

179 

13.08967 

222 

16.00000 

136 

10.17935 

223 

16.06768 

137 

10.24703 

180 

13.15736 

224 

16.13536 

138 

10.31472 

181 

13.22504 

225 

16.20304 

139 

10.38240 

182 

13.29272 

226 

16.27072 

183 

13.36040 

227 

16.33840 

140 

10.45008 

184 

13.42808 

228 

16.40609 

141 

10.51776 

185 

13.49576 

229 

16.47377 

142 

10.58544 

186 

13.56345 

143 

10.65313 

187 

13.63113 

230 

16.54145 

144 

10.72081 

188 

13.69881 

231 

16.60913 

145 

10.78849 

189 

13.76649 

232 

16.67681 

146 

10.85617 

233 

16.74450 

147 

10.92385 

190 

13.83417 

234 

16.81218 

20 


6-Ounce  Multipliers — (Continued) 


GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In 

Multiplier 
or 
Density 

235 

16.87986 

279 

19.85786 

322 

22.76818 

236 

16.94754 

323 

22.83587 

237 

17.01522 

280 

19.92554 

324 

22.90355 

238 

17.03291 

281 

19.99323 

325 

22.97123 

239 

17.15059 

282 

20.06091 

326 

23.03891 

283 

20.12859 

327 

23.10659 

240 

17.21827 

284 

20.19627 

328 

23.17428 

241 

17.28595 

285 

20.26395 

329 

23.24196 

242 

17.35363 

286 

20.33164 

243 

17.42131 

287 

20.39932 

330 

23.30964 

244 

17.48900 

288 

20.46700 

331 

23.37732 

245 

17.55668 

289 

20.53468 

332 

23.44500 

246 

17.62436 

333 

23.51269 

247 

17.69204 

290 

20.60236 

334 

23.58037 

248 

17.75972 

291 

20.67005 

335 

23.64805 

249 

17.82741 

292 

20.73773 

336 

23.71573 

293 

20.80541 

337 

23.78341 

250 

17.89509 

294 

20.87309 

338 

23.85109 

251 

17.96277 

295 

20.94077 

339 

23.91878 

252 

18.03045 

296 

21.00846 

253 

18.09813 

297 

21.07614 

340 

23.98646 

254 

18.16582 

298 

21.14382 

341 

24.05414 

255 

18.23350 

299 

21.21150 

342 

24.12182 

256 

18.30118 

343 

24.18950 

257 

18.36886 

300 

21.27918 

344 

24.25719 

258 

18.43654 

301 

21.34686 

345 

24.32487 

259 

18.50423 

302 

21.41455 

346 

24.39255 

303 

21.48223 

347 

24.46023 

260 

18.57191 

304 

21.54991 

348 

24.52791 

261 

•18.63959 

305 

21.61759 

349 

24.59560 

262 

18.70727 

306 

21.68527 

263 

18.77495 

307 

21.75296 

350 

24.66328 

264 

18.84263 

308 

21.82064 

351 

24.73096 

265 

18.91032 

309 

21.88832 

352 

24.79864 

266 

18.97800 

353 

24.86632 

267 

19.04568 

310 

21.95600 

354 

24.93401 

268 

19.11336 

311 

22.02368 

355 

25.00169 

269 

19.19104 

312 

22.09137 

356 

25.06937 

313 

22.15905 

357 

25.13705 

270 

19.24873 

314 

22.22673 

358 

25.20473 

271 

19.31641 

315 

22.29441 

359 

25.27241 

272 

19.38409 

316 

22.36209 

273 

19.45177 

317 

22.42978 

360 

25.34010 

274 

19.51945 

318 

22.49746 

361 

25.40778 

275 

19.58714 

319 

22.56514 

362 

25.47546 

276 

19.65482 

363 

25.54314 

277 

19.72250 

320 

22.63282 

364 

25.61082 

278 

19.79018 

321 

22.70050 

365 

25.67851 

21 


6-Ounce  Multipliers — (Continued) 


GAUGE 
PRESSURE 

u>. 

per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

366 

25.74619 

411 

28.79187 

456 

31.83756 

367 

25.81387 

412 

28.85956 

457 

31.90524 

368 

25.88155 

413 

28.92724 

458 

31.97292 

369 

25.94923 

414 

28.99492 

459 

32.04060 

415 

29.06260 

370 

26.01692 

416 

29.13028 

460 

32.10829 

371 

26.08460 

417 

29.19796 

461 

32.17597 

372 

26.15228 

418 

29.26565 

462 

32.24365 

373 

26.21996 

419 

29.33333 

463 

32.31133 

374 

26.28764 

464 

32.37901 

375 

26.35532 

420 

29.40101 

465 

32.44670 

376 

26.42301 

421 

29.46869 

466 

32.51438 

377 

26.49069 

422 

29.53637 

467 

32.58206 

378 

26.55837 

423 

29.60406 

468 

32.64974 

379 

26.62605 

424 

29.67174 

469 

32.71742 

380 
381 
382 
383 
384 

26.69373 
26.76142 
26.82910 
26.89678 
26.96446 

425 
426 

427 
428 
429 

29.73942 
29.80710 
29.87478 
29.94247 
30.01015 

470 
471 
472 
473 
474 

32.78510 
32.85279 
32.92047 
32.98815 
33.05583 

385 
386 
387 
388 
389 

27.03214 
27.09983 
27.16751 
28.23519 
27.30287 

430 
431 
432 
433 
434 

30.07783 
30.14551 
30.21319 
30.28087 
30.34856 

475 
476 
477 
478 
479 

33.12351 
33.19120 
33.25888 
33.32656 
33.39424 

390 

27.37055 

435 

30.41624 

480 

33.46192 

391 

27.43824 

436 

30.48392 

•481 

33.52961 

392 

27.50592 

437 

30.55160 

482 

33.59729 

393 

27.57360 

438 

30.61928 

483 

33.66497 

394 

27.64128 

439 

30.68697 

484 

33.73265 

395 

27.70896 

485 

33.80033 

396 

27.77664 

440 

30.75465 

486 

33.86802 

397 

27.84433 

441 

30.82233 

487 

33.93570 

398 

27.91201 

442 

30.89001 

488 

34.00338 

399 

27.97969 

443 

30.95769 

489 

34.07106 

444 

31.02538 

400 

28.04737 

445 

31.09306 

490 

34.13874 

401 

28.11505 

446 

31.16074 

491 

34.20642 

402 

28.18274 

447 

31.22842 

492 

34.27411 

403 

28.25042 

448 

31.29610 

493 

34.34179 

404 

28.31810 

449 

31.36379 

494 

34.40947 

405 

28.38578 

495 

34.47715 

406 

28.45346 

450 

31.43147 

496 

34.54483 

407 

28.52115 

451 

31.47915 

497 

34.61252 

408 

28.58883 

452 

31.56683 

498 

34.68020 

409 

28.65651 

453 

31.63451 

499 

34.74788 

454 

31.70219 

410 

28.72419 

455 

31.76988 

500 

34.81556 

22 


Multipliers  for  Reducing  Gas  Volumes  or  Meter  Readings  to 
a  Pressure  Base  of  8  Ounces  Above  Atmospheric  Pressure 


GAUGE 
PRESSURE 
Inches  of 
Mercury 

Multiplier 
or 
Density 

GAUGE 

PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

-25 

.14291 

8 

1.50335 

35 

3.31543 

-24 

.17585 

8/^2 

1.53691 

36 

3.38255 

-23 

.20879 

9 

1.57046 

37 

3.44966 

-22 

.24173 

91^ 

1.60402 

38 

3.51677 

-21 

.27468 

39 

3.58389 

-20 

.30762 

10 

1.63758 

-19 

.34056 

10^ 

1.67114 

40 

3.65100 

-18 

.37350 

11 

1.70469 

41 

3.71812 

-17 

.40644 

11^2 

1.73825 

42 

3.78523 

-16 

.43938 

12  " 

1.77181 

43 

3.85234 

12*/> 

1.80536 

44 

3.91946 

-15 

.47232 

13 

1.83892 

45 

3.98657 

-14 

.50526 

13/-12 

1.87248 

46 

4.05369 

-13 

.53820 

14 

1.90604 

47 

4.12080 

-12 

.57115 

14J/2 

1.93959 

48 

4.18791 

-11 

.60409 

49 

4.25503 

-10 

.63703 

15 

1.97315 

-  9 

.66997 

151/2 

2.00671 

50 

4.32214 

-  8 

.70291 

16 

2.04026 

51 

4.38926 

—  7 

.73585 

16J/2 

2.07382 

52 

4.45637 

-  6 

.76879 

17 

2.10738 

53 

4.52348 

17^2 

2.14093 

54 

4.59060 

-  5 

.80173 

18 

2.17449 

55 

4.65771 

-  4 

.83467 

18V? 

2.20805 

56 

4.72483 

-  3 

.86761 

19 

2.24161 

57 

4.79194 

-  2 

.90056 

19}/? 

2.27516 

58 

4.85906 

_  i 

.93350 

59 

4.92617 

Atmos. 

.96644 

20 

2.30872 

1   T  h 

20^ 

2.34228 

60 

4.99328 

JL    AyU. 

21 

2.37583 

61 

5.06040 

per  Sq.  In. 

2.40939 

62 

5  12751 

OK 

.98322 

22  2 

2^44295 

63 

5.19463 

OH 

1.00000 

22/4 

2.47651 

64 

5.26174 

1.03355 

23 

2.51006 

65 

5.32885 

\y2 

1.06711 

23y2 

2.54362 

66 

5.39597 

2 

1.10067 

24 

2.57718 

67 

5.46308 

21A 

1.13422 

24^ 

2.61073 

68 

5.53020 

3 

1.16778 

69 

5.59731 

3J/2 

1.20134 

25 

2.64429 

4 

1.23489 

26 

2.71140 

70 

5.66442 

41^ 

1.26845 

27 

2.77852 

71 

5.73154 

28 

2.84563 

72 

5.79865 

5 

1.30201 

29 

2.91275 

73 

5.86577 

5/lj 

1.33557 

30 

2.97986 

74 

5.93288 

6 

1.36912 

31 

3.04697 

75 

6.00000 

&A 

1.40268 

32 

3.11409 

76 

6.06711 

7 

1.43624 

33 

3.18120 

77 

6.13422   - 

VA 

1.46979 

34 

3.24832 

78 

6.20134 

— Means  "Vacuum"  or  minus  pressure. 

23 


8-Ounce  Multipliers — (Continued) 


GAUGE 
PRESSURE 
U>. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

79 

6.26845 

122 

9.15436 

166 

12.10738 

123 

9.22147 

167 

12.17449 

80 

6.33557 

124 

9.28859 

168 

12.24161 

81 

6.40268 

125 

9.35570 

169 

12.30872 

82 

6.46979 

126 

9.42281 

83 

6.53691 

127 

9.48993 

170 

12.37583 

84 

6.60402 

128 

9.55704 

171 

12.44295 

85 

6.67114 

129 

9.62416 

172 

12.51006 

86 

6.73825 

173 

12.57718 

87 

6.80536 

130 

9.69127 

174 

12.64429 

88 

6.87248 

131 

9.75838 

175 

12.71140 

89 

6.93959 

132 

9.82550 

176 

12.77852 

133 

9.89261 

177 

12.84563 

90 

7.00671 

134 

9.95973 

178 

12.91275 

91 

7.07382 

135 

10.02684 

179 

12.97986 

92 

7.14093 

136 

10.09395 

93 

7.20805 

137 

10.16107 

180 

13.04697 

94 

7.27516 

138 

10.22818 

181 

13.11409 

95 

7.34228 

139 

10.29530 

182 

13.18120 

96 

7.40939 

183 

13.24832 

97 

7.47650 

140 

10.36241 

184 

13.31543 

98 

7.54362 

141 

10.42953 

185 

13.38255 

99 

7.61073 

142 

10.49664 

186 

13.44966 

143 

10.56375 

187 

13.51677 

100 

7.67785 

144 

10.63087 

188 

13.58389 

101 

7.74496 

145 

10.69798 

189 

13.65100 

102 

7.81208 

146 

10.76510 

103 

7.87919 

147 

10.83221 

190 

13.71812 

104 

7.94630 

148 

10.89932 

191 

13.78523 

105 

8.01342 

149 

10.96644 

192 

13.85234 

106 

8.08053 

193 

13.91946 

107 

8.14765 

150 

11.03355 

194 

13.98657 

108 

8.21476 

151 

11.10067 

195 

14.05369 

109 

8.28187 

152 

11.16778 

196 

14.12080 

153 

11.23489 

197 

14.18791 

110 

8.34899 

154 

11.30201 

198 

14.25503 

111 

8.41610 

155 

11.36912 

199 

14.32214 

112 

8.48322 

156 

11.43624 

113 

8.55033 

157 

11.50335 

200 

14.38926 

114 

8.61744 

158 

11.57046 

201 

14.45637 

115 

8.68456 

159 

11.63758 

202 

14.52348 

116 

8.75167 

203 

14.59060 

117 

8.81879 

160 

11.70469 

204 

14.65771 

118 

8.88590 

161 

11.77181 

205 

14.72473 

119 

8.95302 

162 

11.83892 

206 

14.79194 

163 

11.90604 

207 

14.85906 

120 

9.02013 

164 

11.97315 

208 

14.92617 

121 

9.08724 

165 

12.04026 

209 

14.99328 

24 


8-Ounce  Multipliers — (Continued) 


GAUGE 
PRESSURE 

u>. 

per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

210 

15.06040 

254 

18.01342 

298 

20.96644 

211 

15.12751 

255 

18.08053 

299 

21.03355 

212 

15.19463 

256 

18.14765 

213 

15.26174 

257 

18.21476 

300 

21.10067 

214 

15.32885 

258 

18.28187 

301 

21.16778 

215 

15.39597 

259 

18.34899 

302 

21.23489 

216 

15.46308 

303 

21.30201 

217 

15.53020 

260 

18.41610 

304 

21.36912 

218 

15.59731 

261 

18.48322 

305 

21.43624 

219 

15.66442 

262 

18.55033 

306 

21.50335 

263 

18.61744 

307 

21.57046 

220 

15.73154 

264 

18.68456 

308 

21.63758 

221 

15.79865 

265 

18.75167 

309 

21.70469 

222 

15.86577 

266 

18.81879 

223 

15.93288 

267 

18.88590 

310 

21.77181 

224 

16.00000 

268 

18.95301 

311 

21.83892 

225 

16.06711 

269 

19.02013 

312 

21.90603 

226 

16.13422 

313 

21.97315 

227 

16.20134 

270 

19.08724 

314 

22.04020 

228 

16.26845 

271 

19.15436 

315 

22.10738 

229 

16.33557 

272 

19.22147 

316 

22.17449 

273 

19.28859 

317 

22.24161 

230 

16.40268 

274 

19.35570 

318 

22.30872 

231 

16.46979 

275 

19.42281 

319 

22.37583 

232 

16.53691 

276 

19.48993 

233 

16.60402 

277 

19.55704 

320 

22.44295 

234 

16.67114 

278 

19.62416 

321 

22.51006 

235 

16.73825 

279 

19.69127 

322 

22.57718 

236 

16.80536 

323 

22.64429 

237 

16.87248 

280 

19.75838 

324 

22.71140 

238 

16.93959 

281 

19.82550 

325 

22.77852 

239 

17.00671 

282 

19.89261 

326 

22.84563 

283 

19.95973 

327 

22.91275 

240 

17.07382 

284 

20.02684 

328 

22.97986 

241 

17.14093 

285 

20.09395 

329 

23.04697 

242 

17.20805 

286 

20.16107 

243 

17.27516 

287 

20.22818 

330 

23.11409 

244 

17.34228 

288 

20.29530 

331 

23.18120 

245 

17.40939 

289 

20.36241 

332 

23.24832 

246 

17.47650 

333 

23.31543 

247 

17.54362 

290 

20.42952 

334 

23.38255 

248 

17.61073 

291 

20.49654 

335 

23.44966 

249 

17.67785 

292 

20.56375 

336 

23.51677 

293 

20.63087 

337 

23.58389 

250 

17.74496 

294 

20.69798 

338 

23.65100 

251 

17.81208 

295 

20.76510 

339 

23.71812 

252 

17.87919 

296 

20.83221 

253 

17.94630 

297 

20.89932 

340 

23.78523 

25 


8-Ounce  Multipliers —  (Continued) 


GAUGE 
PRESSURE 

u>. 

per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

341 

23.85234 

385 

26.80536 

429 

29.75838 

342 

23.91946 

386 

26.87248 

343 

23.98657 

387 

26.93959 

430 

29.82550 

344 

24.05369 

388 

27.00671 

431 

29.89261 

345 

24.12080 

389 

27.07382 

432 

29.95973 

346 

24.18791 

433 

30.02684 

347 

24.25503 

390 

27.14093 

434 

30.09395 

348 

24.32214 

391 

27.20805 

435 

30.16107 

349 

24.38926 

392 

27.27516 

436 

30.22818 

393 

27.34228 

437 

30.29530 

350 

24.45637 

394 

27.40939 

438 

30.36241 

351 

24.52348 

395 

27.47650 

439 

30.42952 

352 

24.59060 

396 

27.54362 

353 

24.65771 

397 

27.61073 

440 

30.49664 

354 

24.72483 

398 

27.67785 

441 

30.56375 

355 

24.79194 

399 

27.74496 

442 

30.63087 

356 

24.85906 

443 

30.69798 

357 

24.92617 

400 

27.81208 

444 

30.76510 

358 

24.99328 

401 

27.87919 

445 

30.83221 

359 

25.06040 

402 

27.94630 

446 

30.89932 

403 

28.01342 

447 

30.96644 

360 

25.12751 

404 

28.08053 

448 

31.03355 

361 

25.19463 

405 

28.14765 

449 

31.10067 

362 

25.26174 

406 

28.21476 

363 

25.32885 

407 

28.28187 

450 

31.16778 

364 

25.39597 

408 

28.34899 

451 

31.23489 

365 

25.46308 

409 

28.41610 

452 

31.30201 

366 

25.53020 

453 

31.36912 

367 

25.59731 

410 

28.48322 

454 

31.43624 

368 

25.66442 

411 

28.55033 

455 

31.50335 

369 

25.73154 

412 

28.61744 

456 

31.57046 

413 

28.68456 

457 

31.63758 

370 

25.79865 

414 

28.75167 

458 

31.70469 

371 

25.86577 

415 

28.81879 

459 

31.77181 

372 

25.93288 

416 

28.88590 

373 

26.00000 

417 

28.95301 

460 

31.83892 

374 

26.06711 

418 

29.02013 

461 

31.90603 

375 

26.13422 

419 

29.08724 

462 

31.97315 

376 

26.20134 

463 

32.04026 

377 

26.26845 

420 

29.15436 

464 

32.10738 

378 

26.33557 

421 

29.22147 

465 

32.17449 

379 

26.40268 

422 

29.28859 

466 

32.24161 

423 

29.35570 

467 

32.30872 

380 

26.46979 

424 

29.42281 

468 

32.37583 

381 

26.53691 

425 

29.48993 

469 

32.44295 

382 

26.60402 

426 

29.55704 

383 

26.67114 

427 

29.62416 

470 

32.51006 

384 

26.73825 

428 

29.69127 

471 

32.57718 

26 


8-Ounce  Multipliers — (Continued) 


GAUGE 
PRESSURE 

Multiplier 

GAUGE 
PRESSURE 

Multiplier 

GAUGE 
PRESSURE 

Multiplier 

U>. 
per  Sq.  In. 

or 
Density 

Lb. 

per  Sq.  In. 

or 
Density 

Lb. 
per  Sq.  In. 

or 
Density 

472 

32.64429 

482 

33.31543 

492 

33.98657 

473 

32.71140 

483 

33.38254 

493 

34.05369 

474 

32.77852 

484 

33.44966 

494 

34.12080 

475 

32.84563 

485 

33.51677 

495 

34.18791 

476 

32.91275 

486 

33.58389 

496 

34.25503 

477 

32.97986 

487 

33.65100 

497 

34.32214 

478 

33.04697 

488 

33.71812 

498 

34.38926 

479 

33.11409 

489 

33.78523 

499 

34.45637 

480 

33.18120 

490 

33.85234 

500 

34.52348 

481 

33.24832 

491 

33.91946 

27 


Multipliers  for  Reducing  Gas  Volumes  or  Meter  Readings  to 
a  Pressure  Base  of  10-Ounces  Above  Atmospheric  Pressure 


GAUGE 
PRESSURE 
Inches  of 
Mercury 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

-25 

.14172 

7^ 

1.45757 

34 

3.22129 

-24 

.17439 

8 

1.49084 

35 

3.28785 

-23 

.20706 

8K 

1.52412 

36 

3.35440 

-22 

.23972 

9 

1.55740 

37 

3.42096 

-21 

.27239 

38 

3.48752 

-20 

.30506 

9^ 

1.59068 

39 

3.55407 

-19 

.33772 

10 

1.62396 

-18 

.37039 

10^ 

1.65723 

40 

•  3.62063 

-17 

.40306 

11 

1.69051 

41 

3.68718 

-16 

.43573 

11K 

1.72379 

42 

3.75374 

12 

1.75707 

43 

3.82029 

-15 

.46839 

121A 

1.79034 

44 

3.88685 

-14 

.50106 

13 

1.82362 

45 

3.95341 

-13 

.53373 

13H 

1.85690 

46 

4.01996 

-12 

.56639 

14 

1.89018 

47 

4.08652 

-11 

.59906 

48 

4.15307 

-10 

.63173 

14^ 

1.92346 

49 

4.21963 

g 

.66439 

15 

1.95673 

-  8 

.69706 

15^ 

1.99001 

50 

4.28618 

-  7 

.72973 

16 

2.02329 

51 

4.35274 

-  6 

.76240 

16^ 

2.05657 

52 

4.41930 

17 

2.08985 

53 

4.48585 

-  5 

.79506 

17H 

2.12312 

54 

4.55241 

-  4 

.82773 

18 

2.15640 

55 

4.61896 

-  3 

.86040 

IBM 

2.18968 

56 

4.68552 

-  2 

.89306 

19 

2.22296 

57 

4.75207 

-  1 

.92573 

58 

4.81863 

Atmos. 

.95840 

IVA 

2.25623 

59 

4.88519 

20 

2.28951 

Lb. 
per  Sq.  In. 

20^ 
21 

2.32279 
2.35607 

60 
61 

4.95174 
5.01830 

.25 

.97504 

2iy2 

2.38935 

62 

5.08485 

.5 

.99168 

22 

2.42262 

63 

5.15141 

.625 

1.00000 

22y2 

2.45590 

64 

5.21797 

1 

1.02495 

23 

2.48918 

65 

5.28452 

IH 

1.05823 

2zy2 

2.52246 

66 

5.35108 

2 

.09151 

24 

2.55574 

67 

5.41763 

2y2 

.12479 

68 

5.48419 

3 

.15806 

2VA 

2.58901 

69 

5.55074 

&A 

.19134 

25 

2.62229 

4 

.22462 

26 

2.68885 

70 

5.61730 

27 

2.75540 

71 

5.68386 

4^ 

1.25790 

28 

2.82196 

72 

5.75041 

5 

1.29118 

29 

2.88851 

73 

5.81697 

&A 

1.32445 

30 

2.95507 

74 

5.88352 

6 

1.35773 

31 

3.02163 

75 

5.95008 

VA 

1.39101 

32 

3.08818 

76 

6.01663 

7 

1.42429 

33 

3.15474 

77 

6.08319 

—Means  "Vacuum"   or  minus  pressure. 

28 


10-Ounce  Multipliers —  (Continued) 


GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In 

Multiplier 
or 
Density 

78 

6.14975 

121 

9.01164 

165 

11.94009 

79 

6.21630 

122 

9.07820 

166 

12.00665 

123 

9.14475 

167 

12.07321 

80 

6.28286 

124 

9.21131 

168 

12.13976 

81 

6.34941 

125 

9.27787 

169 

12.20632 

82 

6.41597 

126 

9.34442 

83 

6.48252 

127 

9.41098 

170 

12.27287 

84 

6.54908 

128 

9.47753 

171 

12.33943 

85 

6.61564 

129 

9.54409 

172 

12.40598 

86 

6.68219 

173 

12.47254 

87 

6.74875 

130 

9.61064 

174 

12.53910 

88 

6.81530 

131 

9.67720 

175 

12.60565 

89 

6.88186 

132 

9.74376 

176 

12.67221 

133 

9.81031 

177 

12.73876 

90 

6.94841 

134 

9.87687 

178 

12.80532 

91 

7.01497 

135 

9.94342 

179 

12.87188 

92 

7.08153 

136 

10.00998 

93 

7.14808 

137 

10.07653 

180 

12.93843 

94 

7.21464 

138 

10.14309 

181 

13.00499 

95 

7.28119 

139 

10.20965 

182 

13.07154 

96 

7.34775 

183 

13.13810 

97 

7.41430 

140 

10.27620 

184 

13.20465 

98 

7.48086 

141 

10.34276 

185 

13.27121 

99 

7.54742 

142 

10.40931 

186 

13.33777 

143 

10.47587 

187 

13.40432 

100 

7.61397 

144 

10.54242 

188 

13.47088 

101 

7.68053 

145 

10.60898 

189 

13.53743 

102 

7.74708 

146 

10.67554 

103 

7.81364 

147 

10.74209 

190 

13.60399 

104 

7.88019 

148 

10.80865 

191 

13.67054 

105 

7.94675 

149 

10.87520 

192 

13.73710 

106 

8.01331 

193 

13.80366 

107 

8.07986 

150 

10.94176 

194 

13.87021 

108 

8.14642 

151 

11.00831 

195 

13.93677 

109 

8.21297 

152 

11.07487 

196 

14.00332 

153 

11.14143 

197 

14.06988 

110    . 

8.27953 

154 

11.20798 

198 

14.13643 

Ill 

8.34608 

155 

11.27454 

199 

14.20297 

112 

8.41264 

156 

11.34109 

113 

8.47920 

157 

11.40765 

200 

14.26950 

114 

8.54575 

158 

11.47420 

201 

14.33610 

115 

8.61231 

159 

11.54076 

202 

14.40266 

116 

8.67886 

203 

14.46921 

117 

8.74542 

160 

11.60732 

204 

14.53577 

118 

8.81197 

161 

11.67387 

205 

14.60232 

119. 

8.87853 

162 

11.74043 

206 

14.66888 

163 

11.80698 

207 

14.73544 

120 

8.94504 

164 

11.87354 

208 

14.80199 

29 


10-Ounce  Multipliers — (Continued) 


GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

209 

14.86855 

252 

17.73044 

296 

20.65890 

253 

17.79700 

297 

20.72545 

210 

14.93510 

254 

17.86356 

298 

20.79201 

211 

15.00166 

255 

17.93011 

299 

20.85856 

212 

15.06821 

256 

17.99667 

213 

15.13477 

257 

18.06322 

300 

20.92512 

214 

15.20133 

258 

18.12978 

301 

20.99168 

215 

15.26788 

259 

18.19633 

302 

21.05823 

216 

15.33444 

303 

21.12479 

217 

15.40099 

260 

17.26289 

304 

21.19134 

218 

15.46755 

261 

18.32945 

305 

21.25790 

219 

15.53410 

262 

18.39600 

306 

21.32445 

263 

18.46256 

307 

21.39101 

220 

15.60066 

264 

18.52911 

308 

21.45757 

221 

15.66722 

265 

18.59567 

309 

21.52412 

222 

15.73377 

266 

18.66222 

223 

15.80033 

267 

18.72878 

310 

21.59068 

224 

15.86688 

268 

18.79534 

311 

21.65723 

225 

15.93344 

269 

18.86189 

312 

21.72379 

226 

16.00000 

313 

21.79034 

227 

16.06655 

270 

18.92845 

314 

21.85690 

228 

16.13311 

271 

18.99500 

315 

21.92346 

•  229 

16.19966 

272 

19.06156 

316 

21.99001 

273 

19.12811 

317 

22.05657 

230 

16.26622 

274 

19.19467 

318 

22.12312 

231 

16.33277 

275 

19.26123 

319 

22.18968 

232 

16.39933 

276 

19.32778 

233 

16.46589 

277 

19.39434 

320 

22.25623 

234 

16.53244 

278 

19.46089 

321 

22.32279 

235 

16.59900 

279 

19.52745 

322 

22.38935 

236 

16.66555 

323 

22.45590 

237 

16.73211 

280 

19.59400 

324 

22.52246 

238 

16.79866 

281 

19.66056 

325 

22.58901 

239 

16.86522 

282 

19.72712 

326 

22.65557 

283 

19.79367 

327 

22.72212 

240 

16.93178 

284 

19.86023 

328 

22.78868 

241 

16.99833 

285 

19.92678 

329 

22.85524 

242 

17.06489 

286 

19.99334 

243 

17.13144 

287 

20.05990 

330 

22.92179 

244 

17.19800 

288 

20.12645 

331 

22.98835 

245 

17.26455 

289 

20.19301 

332 

23.05490 

246 

17.33111 

333 

23.12146 

247 

17.39767 

290 

20.25956 

334 

23.18801 

248 

17.46422 

291 

20.32612 

335 

23.25457 

249 

17.53078 

292 

20.39267 

336 

23.32113 

293 

20.45923 

337 

23.38768 

250 

17.59733 

294 

20.52579 

338 

23.45424 

251 

17.66389 

I   295 

20.59234 

339 

23.52079 

30 


10-Ounce  Multipliers — (Continued) 


GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 

per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

340 

23.58735 

384 

26.51580 

428 

29.44425 

341 

23.65390 

385 

26.58236 

429 

29.51081 

342 

23.72046 

386 

26.64891 

343 

23.78702 

387 

26.71547 

430 

29.57737 

344 

23.85357 

388 

26.78202 

431 

29.64392 

345 

23.92013 

389 

26.84858 

432 

29.71048 

346 

23.98668 

433 

29.77703 

347 

24.05324 

390 

26.91514 

434 

29.84359 

348    i  24.11980 

391 

26.98169 

435 

29.91014 

349    I  24.18635 

392 

27.04825 

436 

29.97670 

393 

27.11480 

437 

30.04326 

350 

24.25291 

394 

27.18136 

438 

30.10981 

351 

24.31946 

395 

27.24791 

439 

30.17637 

352 

24.38602 

396 

27.31447 

353 

24.45257 

397 

27.38103 

440 

30.24292 

354 

24.51913 

398 

27.44758 

441 

30.30948 

355 

24.58569 

399 

27.51414 

442 

30.37603 

356 

24.65224 

443 

30.44259 

357 

24.71880 

400 

27.58069 

444 

30.50915 

358 

24.78535 

401 

27.64725 

445 

30.57570 

359 

24.85191 

402 

27.71381 

446 

30.64226 

403 

27.78036 

447 

30.70881 

360   !  24.91846 

404 

27.84692 

448 

30.77537 

361     24.98502 

405 

27.91347 

449 

30.84192 

362 

25.05158 

406 

27.98003 

363 

25.11813 

407 

28.04658 

450 

30.90848 

364 

25.18469 

408 

28.11314 

451 

30.97504 

365 

25.25124 

409 

28.17970 

452 

31.04159 

366 

25.31780 

453 

31.10815 

367 

25.38435 

410 

28.24625 

454 

31.17470 

368 

25.45091 

411 

28.31281 

455 

31.24126 

369 

25.51747 

412 

28.37936 

456 

31.30782 

413 

28.44592 

457 

31.37437 

370 

25.58402 

414 

28.51247 

458 

31.44093 

371 

25.65058 

415 

28.57903 

459 

31.50748 

372 

25.71713 

416 

28.64559 

373 

25.78369 

417 

28.71214 

460 

31.57404 

374 

25.85024 

418 

28.77870 

461 

31.64059 

375 

25.91680 

419 

28.84525 

462 

31.70715 

376 

25.98336 

463 

31.77371 

377 

26.04991 

420 

28.91181 

464 

31.84026 

378 

26.11647 

421 

28.97836 

465 

31.90682 

379 

26.18302 

422 

29.04492 

466 

31.97337 

423 

29.11148 

467 

32.03993 

380 

26.24958 

424 

29.17803 

468 

32.10648 

381 

26.31613 

425 

29.24459 

469 

32.17304 

382 

26.38269 

426 

29.31114 

383 

26.44925 

427 

29.37770 

470 

32.23960 

31 


10-Ounce  Multipliers—  (Co ntinued) 


GAUGE 
PRESSURE 

Multiplier 

GAUGE 
PRESSURE 

Multiplier 

GAUGE 
PRESSURE 

Multiplier 

Lb. 
per  Sq.  In. 

or 
Density 

Lb. 
per  Sq.  In. 

or 
Density 

Lb. 
per  Sq.  In. 

or 
Density 

471 

32.30615 

481 

32.97171 

491 

33.63727 

472 

32.37271 

482 

33.03826 

492 

33.70382 

473 

32.43926 

483 

33.10482 

493 

33.77038 

474 

32.50582 

484 

33.17138 

494 

33.83693 

475 

32.57237 

485 

33.23793 

495 

33.90349 

476 

32.63893 

486 

33.30449 

496 

33.97004 

477 

32.70549 

487 

33.37104 

497 

34.03660 

478 

32.77204 

488 

33.43760 

498 

34.10316 

479 

32.83860 

489 

33.50415 

499 

34.16971 

480 

32.90515 

490 

33.57071 

500 

34.23627 

32 


Multipliers  for  Reducing  Gas  Volumes  or  Meter  Readings  to 
a  Pressure  Base  of  12  Ounces  Above  Atmospheric  Pressure 


GAUGE 
PRESSURE 

Multiplier 

GAUGE 
PRESSURE 

Multiplier 

GAUGE 
PRESSURE 

Multiplier 

Inches  of 
Mercury 

or 
Density 

Lb. 

per  Sq.  In. 

or 
Density 

Lb. 
per  Sq.  In. 

or 
Density 

-25 

.14055 

15 

1.94059 

59 

4.84488 

-24 

.17295 

16 

2.00660 

-23 

.20535 

17 

2.07260 

60 

4.91089 

-22 

.23775 

18 

2.13861 

61 

4.97689 

-21 

.27014 

19 

2.20462 

62 

5.04290 

-20 

.30254 

63 

5.10891 

-19 

.33494 

20 

2.27062 

64 

5.17491 

-18 

.36734 

21 

2.33663 

65 

5.24092 

-17 

.39973 

22 

2.40264 

66 

5.30693 

-16 

.43213 

23 

2.46864 

67 

5.37293 

24 

2.53465 

68 

5.43894 

-15 

.46453 

25 

2.60066 

69 

5.50495 

-14 

.49693 

26 

2.66666 

-13 

.52932 

27 

2.73267 

70 

5.57095 

-12 

.56172 

28 

2.79867 

71 

5.63696 

-11 

.59412 

29 

2.86468 

72 

5.70297 

-10 
-  9 
—  8 

.62652 
.65891 
.69131 

30 
31 

2.93069 
2.99669 

73 

74 
75 

5.76897 
5.83498 
5.90099 

-  7 

.72371 

32 

3.06270 

76 

5.96699 

-  6 

.75611 

33 

3.12871 

77 

6.03300 

34 

3.19471 

78 

6.09900 

-  5 

.78850 

35 

3.26072 

79 

6.16501 

4 

-  3 
2 

.82090 
.85330 
.88570 

36 
37 
38 

3.32673 
3.39273 
3.45874 

80 
81 

00 

6.23102 
6.29702 
fi  36S03 

-  1 

.91809 

39 

3.52475 

Q6 

83 

O  .  OUOwO 

6.42904 

Atmos. 

.95049 

.96699 
.98349 
1.01650 

40 
41 
42 
43 
44 
45 

3.59075 
3.65676 
3.72277 
3.78877 
3.85478 
3.92079 

84 
85 
86 
87 
88 
89 

6^49504 
6.56105 
6.62706 
6.69306 
6.75907 
6.82508 

tb. 

per  Sq.  In. 

.25 
.5 
1 

2 

1.08250 

46 

3.98679 

90 

6.89108 

3 

1.14851 

47 

4.05280 

91 

6.95709 

4 

1.21452 

48             4.11881 

92 

7.02310 

5 

1.28052 

49 

4.18481 

93 

7.08910 

6 

1.34653 

94 

7.15511 

7 

1.41254 

50 

4.25082 

95 

7.22112 

8 

1.47854 

51              4.31683 

96 

7.28712 

9 

1.54455 

52              4.38283 

97 

7.35313 

53 

4.44884 

98 

7.41914 

10 

1.61056 

54 

4.51485 

99 

7.48514 

11 

1.67656 

55 

4.58085 

12 

1.74257 

56 

4.64686 

100 

7.55115 

13 

1.80858 

57 

4.71287 

101 

7.61716 

14 

1.87458 

58 

4.77887 

102 

7.68316 

— Means  "Vacuum"  or  minus  pressure. 

33 


12-Ounce  Multipliers — (Continued) 


GAUGE 
PRESSURE 
Lb. 
per  Sq..  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

103 

7.74917 

147 

10.65346 

190 

13.49174 

104 

7.81518 

148 

10.71947 

191 

13.55775 

105 

7.88118 

149 

10.78547 

192 

13.62376 

106 

7.94719 

193 

13.68976 

107 

8.01320 

150 

10.85148 

194 

13.75577 

108 

8.07920 

151 

10.91749 

195 

13.82178 

109 

8.14521 

152 

10.98349 

196 

13.88778 

153 

11.04950 

197 

13.95379 

110 

8.21122 

154 

11.11551 

198 

14.01980 

111 

8.27722 

155 

11.18151 

199 

14.08580 

112 

8.34323 

156 

11.24752 

113 

8.40924 

157 

11.31353 

200 

14.15181 

114 

8.47524 

158 

11.37953 

201 

14.21782 

115 

8.54125 

159 

11.44554 

202 

14.28382 

116 

8.60726 

103 

14.34983 

117 
118 
119 

120 
121 
122 
123 
124 
125 
126 

8.67326 
8.73927 
8.80528 

8.87128 
8.93729 
9.00330 
9.06930 
9.13531 
9.20132 
9.26732 

160 
161 
162 
163 
164 
165 
166 
167 
168 
169 

11.51155 
11.57755 
11.64356 
11.70957 
11.77557 
11.84158 
11.90759 
11.97359 
12.03960 
12.10561 

204 
205 
206 
207 
208 
209 

210 
211 
212 
213 

14.41584 
14.48184 
14.54785 
14.61386 
14.67986 
14.74587 

14.81188 
14.87788 
14.94389 
15.00990 

127 

9.33333 

214 

15.07590 

128 

9.39933 

170 

12.17161 

215 

15.14191 

129 

9.46534 

171 

12.23762 

216 

15.20792 

172 

12.30363 

217 

15.27392 

130 

9.53135 

173 

12.36963 

218 

15.33993 

131 

9.59735 

174 

12.43564 

219 

15.40594 

132 

9.66336 

175 

12.50165 

133 

9.72937 

176 

12.56765 

220 

15.47194 

134 

9.79537 

177 

12.63366 

221 

15.53795 

135 

9.86138 

178 

12.69966 

222 

15.60396 

136 

9.92739 

179 

12.76567 

223 

15.66996 

137 

9.99339 

224 

15.73597 

138 

10.05940 

180 

12.83168 

225 

15.80198 

139 

10.12541 

181 

12.89768 

226 

15.86798 

182 

12.96369 

227 

15.93399 

140 

10.19141 

183 

13.02970 

228 

16.00000 

141 

10.25742 

184 

13.09570 

229 

16.06600 

.142 

10.32343 

185 

13.16171 

143 

10.38943 

186 

13.22772 

230 

16.13201 

144 

10.45544 

187 

13.29372 

231 

16.19801 

145 

10.52145 

188 

13.35973 

232 

16.26402 

146 

10.58745 

189 

13.42574 

233 

16.33003 

12-Ounce  Multipliers — (Continued] 


GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

234 

16.39603 

278 

19.30032 

321 

22.13861 

235 

16.46204 

279 

19.36633 

322 

22.20462 

236 

16.52805 

323 

22.27062 

237 

16.59405 

280 

19.43234 

324 

22.33663 

238 

16.66006 

281 

19.49834 

325 

22.40264 

239 

16.72607 

282 

19.56435 

326 

22.46864 

283 

19.63036 

327 

22.53465 

240 

16.79207 

284 

19.69636 

328 

22.60065 

241 

16.85808 

285 

19.76237 

329 

22.66666 

242 

16.92409 

286 

19.82838 

243 

16.99009 

287 

19.89438 

330 

22.73267 

244 

17.05610 

288 

19.96039 

331 

22.79867 

245 

17.12211 

289 

20.02640 

332 

22.86468 

246 

17.18811 

333 

22.93069 

247 

17.25412 

290 

20.09240 

334 

22.99669 

248 

17.32013 

291 

20.15841 

335 

23.06270 

249 

17.38613 

292 

20.22442 

336 

23.12871 

293 

20.29042 

337 

23.19471 

250 

17.45214 

294 

20.35643 

338 

23.26072 

251 

17.51815 

295 

20.42244 

339 

23.32673 

252 

17.58415 

296 

20.48844 

253 

17.65016 

297 

20.55445 

340 

23.39273 

254 

17.71617 

298 

20.62046 

341 

23.45874 

255 

17.78217 

299 

20.68646 

342 

23.52475 

256 

17.84818 

343 

23.59075 

257 

17.91419 

300 

20.75247 

344 

23.65676 

258 

17.98019 

301 

20.81848 

345 

23.72277 

259 

18.04620 

302 

20.88448 

346 

23.78877 

303 

20.95049 

347 

23.85478 

260 

18.11221 

304 

21.01650 

348 

23.92079 

261 

18.17821 

305 

21.08250 

349 

23.98679 

262 

18.24422 

306 

21.14851 

263 

18.31023 

307 

21.21452 

350 

24.05280 

264 

18.37623 

308 

21.28052 

351 

24.11881 

265 

18.44224 

309 

21.34653 

352 

24.18481 

266 

18.50825 

353 

24.25082 

267 

18.57425 

310 

21.41254 

354 

24.31683 

268 

18=64026 

311 

21.47854 

355 

24.38283 

269 

18.70627 

312 

21.54455 

356 

24.44884 

313 

21.61056 

357 

24.51485 

270 

18.77227 

314 

21.67656 

358 

24.58085 

271 

18.83828 

315 

21.74257 

359 

24.64686 

272 

18.90429 

316 

21.80858 

273 

18.97029 

317 

21.87458 

360 

24.71287 

274 

19.03630 

318 

21.94059 

361 

24.77887 

275 

19.10231 

319 

22.00660 

362 

24.84488 

276 

19.16831 

363 

24.91089 

277 

19.23432 

320 

22.07260 

364            24.97689 

12-Ounce  Multipliers —  (Continued) 


GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density. 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

365 

25.04290 

410 

28.01320 

456 

31.04950 

366 

25.10891 

411 

28.07920 

457 

31.11551 

367 

25.17491 

412 

28.14521 

458 

31.18151 

368 

25.24092 

413 

27.21122 

459 

31.24752 

369 

370 
371 
372 
373 
374 

25.30693 

25.37293 
25.43894 
25.50495 
25.57095 
25.63696 

414 
415 
416 
417 
418 
419 

28.27722 
28.34323 
28.40924 
28.47524 
28.54125 
28.60726 

460 
461 
462 
463 
464 
465 

31.31353 
31.37953 
31.44554 
31.51155 
31.57755 
31.64356 

375 

25.70297 

420 

28.67326 

466 

31.70957 

376 

25.76897 

421 

28.73927 

467 

31.77557 

377 

25.83498 

422 

28.80528 

468 

31.84158 

378 

25.90099 

423 

28.87128 

469 

31.90759 

379 

380 
381 
382 
383 
384 
385 
386 
387 
388 
389 

390 
391 
392 
393 

25.96699 

26.03300 
26.09901 
26.16501 
26.23102 
26.29702 
26.36303 
26.42904 
26.49504 
26.56105 
26.62706 

26.69306 
26.75907 
26.82508 
26.89108 

424 
425 
426 
427 
428 
429 

430 
431 
432 
433 
434 
435 
436 
437 
438 
439 

28.93729 
29.00330 
29.06930 
29.13531 
29.20131 
29.26732 

29.33333 
29.39933 
29.46534 
29.53135 
29.59735 
29.66336 
29.72937 
29.79537 
29.86138 
29.92739 

470 

471 
472 
473 
474 
475 
476 
477 
478 
479 

480 
481 
482 
483 
484 
485 

31.97359 
32.03960 
32.10561 
32.17161 
32.23762 
32.30363 
32.36963 
32.43564 
32.50165 
32.56765 

32.63366 
32.69967 
32.76567 
32.83168 
32.89768 
32.96369 

394 

26.95709 

440 

29.99339 

486 

33.02970 

395 

27.02310 

441 

30.05940 

487 

33.09570 

396 

27.08910 

442 

30.12541 

488 

33.16171 

397 

27.15511 

443 

30.19141 

489 

33.22772 

398 

27.22112 

444 

30.25742 

399 

27.28712 

445 

30.32343 

490 

33.29372 

400 
401 
402 
403 

27.35313 
27.41914 
27.48514 
27.55115 

446 
447 
448 
449 

30.38943 
30.45544 
30.52145 
30.58745 

491 
492 
493 
494 
495 

33.35973 
33.42574 
33.49174 
33.55775 
33.62376 

404 

27.61716 

450 

30.65346 

496 

33.68976 

405 

27.68316 

451 

30.71947 

497 

33.75577 

406 

27.74917 

452 

30.78547 

498 

33.82178 

407 

27.81518 

453 

30.85148 

499     33.88778 

408 

27.88118 

454 

30.91749 

409 

27.94719 

455 

30.98349  j 

500 

33.95379 

I 

36 


Multipliers  for  Reducing  Gas  Volumes  or  Meter  Readings  to 
a  Pressure  Base  of  14  Ounces  Above  Atmospheric  Pressure 


GAUGE 
PRESSURE 
Inches  of 
Mercury 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

-25 

.13940 

13 

1.79378 

57 

4.67430 

-24 

.17154 

14 

1.85924 

58 

4.73977 

-23 

.20367 

15 

1.92471 

59 

4.80523 

-22 

.23580 

16 

1.99018 

-21 

.26793 

17 

2.05564 

60 

4.87070 

-20 

.30006 

18 

2.12111 

61 

4.93617 

-19 

.33220 

19 

2.18657 

62 

5.00163 

-18 

.36433 

63 

5.06710 

-17 

.39646 

20 

2.25204 

64 

5.13256 

-16 

.42859 

21 

2.31751 

65 

5.19803 

22 

2.38297 

66 

5.26350 

-15 

.46073 

23 

2.44844 

67 

5.32896 

-14 

.49286 

24 

2.51391 

68 

5.39443 

-13 

.52499 

25 

2.57937 

69 

5.45990 

-12 
-11 
-10 
-  9 

.55712 
.58926 
.62139 
.65352 

26 

27 
28 
29 

2.64484 
2.71031 

2.77577 
2.84124 

70 

71 

5 

5.52536 
5.59083 
5.65630 
5.72176 

—  8 
-  7 
-  6 

-  5 
—  4 
-  3 

.68565 
.71779 
.74992 

.78205 
.81418 
.84631 

30 
31 
32 
33 
34 
35 

2.90671 
2.97217 
3.03764 
3.10310 
3.16857 
3.23404 

8 

76 

77 
78 
79 

5.78723 
5.85270 
5.91816 
5.98363 
6.04909 
6.11456 

-  2 

.87845 

36 

3.29950 

80 

6.18003 

-  1 

.91058 

37 

3.36497 

81 

6.24549 

Atmos. 

.94271 

38 

3.43044 

82 

6.31096 

Lb. 

39 

3.49590 

83 

6.37643 

per  Sq.  In. 

40 

3.56137 

84 
85 

6.44189 
6.50736 

.25 

.95908 

41 

3.62684 

86 

6^57283 

.5 

.97545 

42 

3.69230 

87 

6.63829 

.75 

.99181 

43 

3.75777 

88 

6.70376 

.875 

1.00000 

44 

3.82324 

89 

6.76923 

1 

1.00818 

45 

3.88870 

2 

1.07364 

46 

3.95417 

90 

6.83469 

3 

1.13911 

47 

4.01963 

91 

6.90016 

4 

1.20458 

48 

4.08510 

92 

6.96563 

5 

1.27004 

49 

4.15057 

93 

7.03109 

6 

1.33551 

94 

7.09656 

7 

1.40098 

50 

4.21603 

95 

7.16202 

8 

1.46644 

51 

4.28150 

96 

7.22749 

9 

1.53191 

52 

4.34697 

97 

7.29296 

53 

4.41243 

98 

7.35842 

10 

1.59738 

54 

4.47790 

99 

7.42389 

11 

1.66284 

55 

4.54337 

12 

1.72831 

56 

4.60883 

100 

7.48936 

— Means   "Vacuum" 


or  minus  pressure. 

37 


14-Ounce  Multipliers —  (Continued] 


GAUGE 
PRESSURE 
Lb, 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

101 

7.55482 

145 

10.43535 

189 

13.31587 

102 

7.62029 

146 

10.50081 

103 

7.68576 

147 

10.56628 

190 

13.38134 

104 

7.75122 

148 

10.63175 

191 

13.44680 

105 

7.81669 

149 

10.69721 

192 

13.51227 

106 

7.88216 

193 

13.57774 

107 

7.94762 

150 

10.76268 

194 

13.64320 

108 

8.01309 

151 

10.82815 

195 

13.70867 

109 

8.07855 

152 

10.89361 

196 

13.77414 

153 

10.95908 

197 

13.83960 

110 

8.14402 

154 

11.02454 

198 

13.90507 

111 

8.20949 

155 

11.09001 

199 

13.97054 

112 
113 
114 

8.27495 
8.34042 
8.40589 

156 
157 

158 

11.15548 
11.22094 
11.28641 

200 
201 

14.03600 
14.10147 

115 

8.47135 

159 

11.35188 

202 

14.16693 

116 

8.53682 

203 

14.23240 

117 
118 
119 

8^60229 
8.66775 
8.73322 

160 

161 
162 
163 

11.41734 
11.48281 
11.54828 
11.61374 

204 
205 
206 
207 

14.29787 
14.36333 
14.42880 
14.49427 

120 

121 

8.79869 
8.86415 

164 
165 

11.67921 
11.74468 

208 
209 

14.55973 
14.62520 

122 

8.92962 

166 

11.81014 

210 

14.69067 

123 

8.99508 

167 

11.87561 

211 

14.75613 

124 

9.06055 

168 

11.94108 

212 

14.82160 

125 

9.12602 

169 

12.00654 

213 

14.88707 

126 

127 
128 

9.19148 
9.25695 
9.32242 

170 
171 

12.07201 
12.13747 

214 
215 
216 

14.95253 
15.01800 
15.08346 

129 

9.38788 

172 

12.20294 

217 

15.14893 

130 

9.45335 

173 
174 

12.26841 
12.33387 

218 
219 

15.21440 
15.27986 

131 

9.51882 

175 

12.39934 

132 

9.54828 

176 

12.46481 

220 

15.34533 

133 

9.64975 

177 

12.53027 

221 

15.41080 

134 

9.71522 

178 

12.59574 

222 

15.47626 

135 

9.78068 

179 

12.66121 

223 

15.54173 

136 

9.84615 

224 

15.60720 

137 

9.91162 

180 

12.72667 

225 

15.67266 

138 

9.97708 

181 

12.79214 

226 

15.73813 

139 

10.04255 

182 

12.85761 

227 

15.80360 

183 

12.92307 

228 

15.86906 

140 

10.10801 

184 

12.98854 

229 

15.93453 

141 

10.17348 

185 

13.05400 

142 

10.23895 

186 

13.11947 

230 

15.99999 

143 

10.30441 

187 

13.18494 

231 

16.06546 

144 

10.36988 

188 

13.25040 

232 

16.13093 

38 


14-Ounce  Multipliers — (Continued) 


GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

233 

16.19639 

277 

19.07692 

320 

21.89198 

234 

16.26186 

278 

19.14238 

321 

21.95744 

235 

16.32733 

279 

19.20785 

322 

22.02291 

236 

16.39279 

323 

22.08837 

237 

16.45826 

280 

19.27332 

324 

22.15384 

238 

16.52373 

281 

19.33878 

325 

22.21931 

239 

16.58919 

282 

19.40425 

326 

22.28477 

283 

19.46972 

327 

22.35024 

240 

16.65466 

284 

19.53518 

328 

22.41571 

241 

16.72013 

285 

19.60065 

329 

22.48117 

242 

16.78559 

286 

19.66612 

243 

16.85106 

287 

19.73158 

330 

22.54664 

244 

16.91653 

288 

19.79705 

331 

22.61211 

245 

16.98199 

289 

19.86252 

332 

22.67757 

246 

17.04746 

333 

22.74304 

247 
248 
249 

250 
251 
252 
253 
254 
255 
256 

17.11292 
17.17839 
17.24386 

17.30932 
17.37479 
17.44026 
17.50572 
17.57119 
17.63666 
17.70212 

290 
291 
292 
293 
294 
295 
296 
297 
298 
299 

19.92798 
19.99345 
20.05891 
20.12438 
20.18985 
20.25531 
20.32078 
20.38625 
20.45171 
20.51718 

334 
335 
336 
337 
338 
339 

340 
341 
342 
343 

22.80851 
22.87397 
22.93944 
23.00490 
23.07037 
23.13584 

23.20130 
23.26677 
23.33224 
23.39770 

257 

17.76759 

344 

23.46317 

258 

17.83306 

300 

20.58265 

345 

23.52864 

259 

17.89852 

301 

20.64811 

346 

23.59410 

302 

20.71358 

347 

23.65957 

260 

17.96399 

303 

20.77905 

348 

23.72504 

261 

18.02945 

304 

20.84451 

349 

23.79050 

262 

18.09492 

305 

20.90998 

263 

18.16039 

306 

20.97544 

350 

23.85597 

264 

18.22585 

307 

21.04091 

351 

23.92144 

265 

18.29132 

308 

21.10638 

352 

23.98690 

266 

18.35679 

309 

21.17184 

353 

24.05237 

267 

18.42225 

354 

24.11783 

268 

18.48772 

310 

'  21.23731 

355 

24.18330 

269 

18.55319 

311 

21.30278 

356 

24.24877 

312 

21.36824 

357 

24.31423 

270 

18.61865 

313 

21.43371 

358    1  24.37970 

271 

18.68412 

314 

21.49918 

359 

24.44517 

272 

18.74959 

315 

21.56464 

273 

18.81505 

316 

21.63011 

360 

24.51063 

274 

18.88052 

317 

21.69558 

361 

24.57610 

275 

18.94599 

318 

21.76104 

362 

24.64157 

276 

19.01145 

319 

21.82651 

363 

24.70703 

14-Ouace  Multipliers — (Continued) 


GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplie 
or 
Density 

364 

24.77250 

410 

27.78396 

456 

30.79541 

365 

24.83797 

411 

27.84942 

457 

30.86088 

366 

24.90343 

412 

27.91489 

458 

30.92635 

367 

24.96890 

413 

27.98035 

459 

30.99181 

368 

25.03436 

414 

28.04582 

369 

25.09983 

415 

28.11129 

460 

31.05728 

416 

28.17675 

461 

31.12274 

370 

25.16530 

417 

28.24222 

462 

31.18821 

371 

25.23076 

418 

28.30769 

463 

31.25368 

372 

25.29623 

419 

28.37315 

464 

31.31914 

373 

25.36170 

465 

31,38461 

374 

25.42716 

420 

28.43862 

466 

31.45008 

375 

25.49263 

421 

28.50409 

467 

31.51554 

376 

25.55810 

422 

28.56955 

468 

31.58101 

377 

25.62356 

423 

28.63502 

469 

31.64648 

378 

25.68903 

424 

28.70049 

379 

25.75450 

425 

28.76595 

470 

31.71194 

426 

28.83142 

471 

31.77741 

380 

25.81996 

427 

28.89689 

472 

31.84288 

381 

25.88543 

428 

28.96235 

473 

31.90834 

382 

25.95089 

429 

29.02782 

474 

31.97381 

383 

26.01636 

475 

32.03927 

384 

26.08183 

430 

29.09328 

476 

32.10474 

385 

26.14729 

431 

29.15875 

477 

32.17021 

386 

26.21276 

432 

29.22422 

478 

32.23567 

387 

26.27823 

433 

29.28968 

479 

32.30114 

388 

26.34369 

434 

29.35515 

389 

26.40916 

435 

29.42062 

480 

32.36661 

436 

29.48608 

481 

32.43207 

390 

26.47463 

437 

29.55155 

482 

32.49754 

391 

26.54009 

438 

29.61702 

483 

32.56301 

392 

26.60556 

439 

29.68248 

484 

32.62847 

393 

26.67103 

485 

32.69394 

394 

26.73649 

440 

29.74795 

486 

32.75941 

395 

26.80196 

441 

29.81342 

487 

32.82487 

396 

26.86743 

442 

29.87888 

488 

32.89034 

397 

26.93289 

443 

29.94435 

489 

32.95580 

398 

26.99836 

444 

30.00981 

399 

27.06382 

445 

30.07528 

490 

33.02127 

446 

30.14075 

491 

33.08674 

400 

27.12929 

447 

30.20621 

492 

33.15220 

401 

27.19476 

448 

30.27168 

493 

33.21767 

402 

27.26022 

449 

30.33715 

494 

33.28314 

403 

27.32569 

495 

33.34860 

404 

27.39116 

450 

30.40261 

496 

33.41407 

405 

27.45662 

451 

30.46808 

497 

33.47954 

406 

27.52209 

452 

30.53355 

498 

33.54500 

407 

27.58756 

453 

30.59901 

499 

33.61047 

408 

27.65302 

454 

30.66448 

409 

27.71849 

455 

30.72995 

500 

33.67594 

40 


Multipliers  for  Reducing  Gas  Volumes  or  Meter  Readings  to 
a  Pressure  Base  of  1  Pound  Above  Atmospheric  Pressure. 


GAUGE 
PRESSURE 
Inches  of 
Mercury 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

-25 

.13827 

73^ 

1.42207 

34 

3.14285 

-24 

.17014 

8 

1.45454 

35 

3.20779 

-23 

.20201 

8/^ 

1.48701 

36 

3.27272 

-22 

.23389 

9 

1.51948 

37 

3.33766 

-21 

.26576 

93^ 

1.55194 

38 

3.40259 

-20 

.29763 

39 

3.46753 

-19 

.32950 

10 

1.58441 

-18 

.36137 

103^ 

1.61688 

40             3.53246 

-17 

.39324 

11 

1.64935 

41             3.59740 

-16 

.42512 

H3/2 

1.68181 

42 

3.66233 

12 

1'.  71428 

43 

3.72727 

-15 

.45799 

123/2 

1.74675 

44 

3.79220 

-14 

.48880 

13 

1.77922 

45 

3.85714 

-13 

.52073 

133/2 

1.81168 

46 

3.92207 

-12 

.55260 

14 

1.84415 

47 

3.98701 

-11 

.58447 

143/2 

1.87662 

48 

4.05194 

-10 

.61634 

49 

4.11688 

-  9 

.64822 

15 

1.90909 

-  8 

.68009 

153/2 

1.94155 

50 

4.18181 

-  7 

.71196 

16 

1.97402 

51 

4.24675 

-  6 

.74383 

163/-2 

2.00649 

52 

4.31168 

17 

2.03896 

53 

4.37662 

-  5 

.77570 

173^ 

2.07142 

54 

4.44155 

-  4 

.80757 

18 

2.10389 

55 

4.50649 

-  3 

.83945 

18/12 

2.13636 

56 

4.57142 

-  2 

.87132 

19 

2.16883 

57 

4.63636 

-  1                .90319 

193/£ 

2.20129 

58 

4.70129 

Atmos. 

.93506 

59 

4.76623 

T  K 

20 

2.23376 

JL/D. 

per  Sq.  In. 

21 

2.26623 
2.29870 

60 
fil 

4.83116 
4.89610 

.25 

.95129 

21  y> 

2^33116 

ox 
62 

4^96103 

.5 

.96753 

22 

2.36363 

63 

5.02597 

.625 

.97564 

223/J2 

2.39610 

64 

5.09090 

1 

1.00000 

23 

2.42857 

65 

5.15584 

l/^ 

1.03246 

23y2 

2.46103 

66 

5.22077 

2 

1.06493 

24 

2.49350 

67 

5.28571 

%1A 

1.09740 

24^ 

2.52597 

68 

5.35064 

3 

1.12987 

69 

5.41558 

31/2 

1.16233 

25 

2.55844 

4 

1.19480 

26 

2.62337 

70 

5.48051 

4//£ 

1.22727 

27 

2.68831 

71 

5.54545 

28 

2.75324 

72 

5.61038 

5 

1.25974 

29 

2.81818 

73 

5.67532 

5/^j 

1.29220 

30 

2.88311 

74 

5.74025 

6 

1.32467 

31 

2.94805 

75 

5.80519 

63/2 

1.35714 

32 

3.01298 

76 

5.87012 

7 

1.38961 

33 

3.07792 

77 

5.93506 

— Means   "Vacuum"   or  minus  pressure. 

41 


1-Pound  Multipliers —  (Continued^ 


GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

78 

6.00000 

121 

8.79220 

165 

11.64935 

79 

6.06493 

122 

8.85714 

166 

11.71428 

123 

8.92207 

167 

11.77922 

80 

6.12987 

124 

8.98701 

168 

11.84415 

81 

6.19480 

125 

9.05194 

169 

11.90909 

82 

6.25974 

126 

9.11688 

83 

6.32467 

127 

9.18181 

170 

11.97402 

84 

6.38961 

128 

9.24675 

171 

12.03896 

85 

6.45454 

129 

9.31168 

172 

12.10389 

86 

6.51948 

173 

12.16883 

87 

6.58441 

130 

9.37662 

174 

12.23376 

88 

6.64935 

131 

9.44155 

175 

12.29870 

89 

6.71428 

132 

9.50649 

176 

12.36363 

133 

9.57142 

177 

12.42857 

90 

6.77922 

134 

9.63636 

178 

12.49350 

91 

6.84415 

135 

9.70129 

179 

12.55844 

92 

6.90909 

136 

9.76623 

93 

6.97402 

137 

9.83116 

180 

12.62337 

94 

7.03896 

138 

9.89610 

181 

12.68831 

95 

7.10389 

139 

9.96103 

182 

12.75324 

96 

7.16883 

183 

12.81818 

97 

7.23376 

140 

10.02597 

184 

12.88311 

98 

7.29870 

141 

10.09090 

185 

12.94805 

99 

7.36363 

142 

10.15584 

186 

13.01298 

143 

10.22077 

187 

13.07792 

100 

7.42857 

144 

10.28571 

188 

13.14285 

101 

7.49350 

145 

10.35064 

189 

13.20779 

102 

7.55844 

146 

10.41558 

103 

7.62337 

147 

10.48051 

190 

13.27272 

104 

7.68831 

148 

10.54545 

191 

13.33766 

105 

7.75324 

149 

10.61038 

192 

13.40259 

106 

7.81818 

193 

13.46753 

107 

7.88311 

150 

10.67532 

194 

13.53246 

108 

7.94805 

151 

10.74025 

195 

13.59740 

109 

8.01298 

152 

10.80519 

196 

13.66233 

153 

10.87012 

197 

13.72727 

110 

8.07792 

154 

10.93506 

198 

13.79220 

111 

8.14285 

155 

11.00000 

199 

13.85714 

112 

8.20779 

156 

11.06493 

113 

8.27272 

157 

11.12987 

200 

13.92207 

114 

8.33766 

158 

11.19480 

201 

13.98701 

115 

8.40259 

159 

11.25974 

202 

14.05194 

116 

8.46753 

203 

14.11688 

117 

8.53246 

160 

11.32467 

204 

14.18181 

118 

8.59740 

161 

11.38961 

205 

14.24675 

119 

8.66233 

162 

11.45454 

206 

14.31168 

163 

11.51948 

207 

14.37662 

120 

8.72727 

164 

11.58441 

208 

14.44155 

42 


1-Pound  Multipliers — (Continued] 


GAUGE 
PRESSURE 
tb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

209 

14.50649 

252 

17.29870 

296 

20.15584 

253 

17.36363 

297 

20.22077 

210 

14.57142 

254 

17.42857 

298 

20.28571 

211 

14.63636 

255 

17.49350 

299 

20.35064 

212 

14.70129 

256 

17.55844 

213 

14.76623 

257 

17.62337 

300 

20.41558 

214 

14.83116 

258 

17.68831 

301 

20.48051 

215 

14.89610 

259 

17.75324 

302 

20.54545 

216 

14.96103 

303 

20.61038 

217 

15.02597 

260 

17.81818 

304 

20.67532 

218 

15.09090 

261 

17.88311 

305 

20.74025 

219 

15.15584 

262 

17.94805 

306 

20.80519 

263 

18.01298 

307 

20.87012 

220 

15.22077 

264 

18.07792 

308 

20.93506 

221 

15.28571 

265 

18.14285 

309 

21.00000 

222 

15.35064 

266 

18.20779 

223 

15.41558 

267 

18.27272 

310    1  21.06493 

224 

15.48051 

268 

18.33766 

311     21.12987 

225 

15.54545 

269 

18.40259 

312     21.19480 

226 

15.61038 

313     21.25974 

227 

15.67532 

270 

18.46753 

314 

21.32467 

228 

15.74025 

271 

18.53246 

315 

21.38961 

229 

15.80519 

272 

18.59740 

316 

21.45454 

273 

18.66233 

317 

21.51948 

230 

15.87012 

274 

18.72727 

318 

21.58441 

231 

15.93506 

275 

18.79220 

319 

21.64935 

232 

16.00000 

276 

18.85714 

233 

16.06493 

277 

18.92207 

320 

21.71428 

234 

16.12987 

278 

18.98701 

321 

21.77922 

235 

16.19480 

279 

19.05194 

322 

21.84415 

236 

16.25974 

323 

21.90909 

237 

16.32467 

280 

19.11688 

324 

21.97402 

238 

16.38961 

281 

19.18181 

325 

22.03896 

239 

16.45454 

282 

19.24675 

326 

22.10389 

283 

19.31168 

327 

22.16883 

240 

16.51948 

284 

19.37662 

328 

22.23376 

241 

16.58441 

285 

19.44155 

329 

22.29870 

242 

16.64935 

286 

19.50649 

243 

16.71428 

287 

19.57142 

330     22.36363 

244 

16.77922 

288 

19.63636 

331 

22.42857 

245 

16.84415 

289 

19.70129 

332 

22.49350 

246 

16.90909 

333 

22.55844 

247 

16.97402 

290 

19.76623 

334 

22.62337 

248 

17.03896 

291 

19.83116 

335 

22.68831 

249 

17.10389 

292 

19.89610 

336 

22.75324 

293 

19.96103 

337 

22.81818 

250 

17.16883 

294 

20.02597 

338 

22.88311 

251 

17.23376 

295 

20.09090 

339 

22.94805 

43 


1-Pound  Multipliers —  (Continued) 


GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

340 

23.01298 

384 

25.87012 

428 

28.72727 

341 

23.07792 

385 

25.93506 

429 

28.79220 

342 

23.14285 

386 

26.00000 

343 

23.20779 

387 

26.06493 

430 

28.85714 

344 

23.27272 

388 

26.12987 

431 

28.92207 

345 

23.33766 

389 

26.19480 

432 

28.98701 

346 

23.40259 

433 

29.05194 

347 

23.46753 

390 

26.25974 

434 

29.11688 

348 

23.53246 

391 

26.32467 

435 

29.18181 

349 

23.59740 

392 

26.38961 

436 

29.24675 

393 

26.45454 

437 

29.31168 

350 

23.66233 

394 

26.51948 

438 

29.37662 

351 

23.72727 

395 

26.58441 

439 

29.44155 

352 

23.79220 

396 

26.64935 

353 

23.85714 

397 

26.71428 

440 

29.50649 

354 

23.92207 

398 

26.77922 

441 

29.57142 

355 

23.98701 

399 

26.84415 

442 

29.63636 

356 

24.05194 

443 

29.70129 

357 

24.11688 

400 

26.90909 

444 

29.76623 

358 

24.18181 

401 

26.97402 

445 

29.83116 

359 

24.24675 

402 

27.03896 

446 

29.89610 

403 

27.10389 

447 

29.96103 

360 

24.31168 

404 

27.16883 

448 

30.02397 

361 

24.37662 

405 

27.23376 

449 

30.09090 

362 

24.44155 

406 

27.29870 

363 

24.50649 

407 

27.36363 

450 

30.15584 

364 

24.57142 

408 

27.42857 

451 

30.22077 

365 

24.63636 

409 

27.49350 

452 

30.28571 

366 

24.70129 

453 

30.35064 

367 

24.76623 

410 

27.55844 

454 

30.41558 

368 

24.83116 

411 

27.62337 

455 

30.48051 

369 

24.89610 

412 

27.68831 

456 

30.54545 

413 

27.75324 

457 

30.61038 

370 

24.96103 

414 

27.81818 

458 

30.67532 

371 

25.02597 

415 

27.88311 

459 

30.74025 

372 

25.09090 

416 

27.94805 

373 

25.15584 

417 

28.01298 

460 

30.80519 

374 

25.22077 

418 

28.07792 

461 

30.87012 

375 

25.28571 

419 

28.14285 

462 

30.93506 

376 

25.35064 

463 

31.00000 

377 

25.41558 

420 

28.20779 

464 

31.06493 

378 

25.48051 

421 

28.27272 

465 

31.12987 

379 

25.54545 

422 

28.33766 

466 

31.19480 

423 

28.40259 

467 

31.25974 

380 

25.61038 

424 

28.46753 

468 

31.32467 

381 

25.67532 

425 

28.53246 

469 

31.38961 

382 

25.74025 

426 

28.59740 

383 

25.80519 

427 

28.66233 

470 

31.45454 

44 


1-Pound  Multipliers — (Continued) 


GAUGE 
PRESSURE 

Multiplier 

GAUGE 
PRESSURE 

Multiplier 

GAUGE 
PRESSURE 

Multiplier 

Lb. 
per  Sq.  In. 

or 
Density 

Lb. 
per  Sq.  In. 

or 
Density 

Lb. 

per  Sq.  In. 

or 
Density 

471 

31.51948 

481 

32.16883 

491 

32.81818 

472 

31.58441 

482 

32.23376 

492 

32.88311 

473 

31.64935 

483 

32.29870 

493 

32.94805 

474 

31.71428 

484 

32.36363 

494 

33.01298 

475 

31.77922 

485 

32.42857 

495 

33.07792 

476 

31.84415 

486 

32.49350 

496 

33.14285 

477 

31.90909 

487 

32.55844 

497 

33.20779 

478 

31.97402 

488 

32.62337 

498 

33.27272 

479 

32.03896 

489 

32.68831 

499 

33.33766 

480 

32.10389 

490 

32.75324 

500 

33.40259 

Multipliers  for  Reducing  Gas  Volumes  or  Meter  Readings  to 
a  Pressure  of  1J/2  Lb.  Above  Atmospheric  Pressure 


GAUGE 
PRESSURE 
Inches  of 
Mercury 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

-25 

.13392 

13 

1.72327 

57 

4.49056 

-24 

.16479 

14 

1.78616 

58 

4.55345 

-23 

.19566 

15 

1.84905 

59 

4.61635 

-22 

.22653 

16 

1.91194 

-21 

.25740 

17 

1.97484 

60 

4.67924 

-20 

.28827 

18 

2.03773 

61 

4.74213 

-19 

.31914 

19 

2.10C62 

62 

4.80503 

-18 

.35001 

63 

4.86792 

-17 

.38088 

20 

2.16352 

64 

4.93081 

-16 

.41175 

21 

2.22641 

65 

4.99371 

22 

2.28930 

66 

5.05660 

-15 

.44262 

23 

2.35220 

67 

5.11949 

-14 

.47349 

24 

2.41509 

68 

5.18238 

-13 

.50435 

25 

2.47798 

69 

5.24528 

-12 
-11 
-10 
-  9 

.53522 
.56609 
.59696 
.62783 

26 

27 
28 
29 

2.54088 
2.60377 
2.66666 
2.72955 

70 
71 
72 
73 

5.30817 
5.37106 
5.43396 
5.49685 

—  8 
-  7 
-  6 

-  5 
-  4 
-  3 

.65870 
.68957 
.72044 

.75131 
.78218 
.81305 

30 
31 
32 
33 
34 
35 

2.79245 
2.85534 
2.91823 
2.98113 
3.04402 
3.10691 

74 
75 
76 
77 
78 
79 

5.55974 
5.62264 
5.68553 
5.74842 
5.81132 
5.87421 

2 

.84392 

36 

3.16981 

80 

5.93710 

-  I 

.87479 

37 

3.23270 

81 

6.00000 

Atmos. 

.90566 

38 

3.29559 

82 

6.06289 

Lb. 

39 

3.35849 

83 

6.12578 

per  Sq.  In. 

40 

3.42138 

84 

OK 

6.18867 

f*    OKI  K*7 

.25 

.92138 

41 

3.48427 

oO 

86 

O.<iOlOf 

6.31446 

.5 

.93710 

42 

3.54716 

87 

6.37735 

.625 

.94496 

43 

3.61006 

88 

6.44015 

1. 

.96855 

44 

3.67295 

89 

6.50314 

1.5 

1.00000 

45 

3.73584 

2 

1.03144 

46 

3.79874 

90 

6.56603 

3 

1.09433 

47 

3.86163 

91 

6.62893 

4 

.  1.15723 

48 

3.92452 

92 

6.69182 

5 

1.22012 

49 

3.98742 

93 

6.75471 

6 

1.28301 

94 

6.81760 

7 

1.34591 

50 

4.05031 

95 

6.88050 

8 

1.40880 

51 

4.11320 

96 

6.94339 

9 

1.47169 

52 

4.17610 

97 

7.00628 

53 

4.23899 

98 

7.06918 

10 

1.53459 

54 

4.30188 

99 

7.13207 

11 

1.59748 

55 

4.36477 

12 

1.66037 

56 

4.42767 

100 

7.19496 

—  Means  "Vacuum"    or    minus  pressure. 

46 


1  J/2-Pound  Multipliers —  (Continued} 


GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

101 

7.25786 

145 

10.02515 

189 

12.79245 

102 

7.32075 

146 

10.08805 

103 

7.38364 

147 

10.15094 

190 

12.85534 

104 

7.44654 

148 

10.21383 

191 

12.91823 

105 

7.50943 

149 

10.27672 

192 

12.98113 

106 

7.57232 

193 

13.04402 

107 

7.63522 

150 

10.33962 

194 

13.10691 

108 

7.69811 

151 

10.40251 

195 

13.16981 

109 

7.76100 

152 

10.46540 

196 

13.23270 

153 

10.52830 

197 

13.29559 

110 

7.82389 

154 

10.59119 

198 

13.35849 

111 

7.88679 

155 

10.65408 

199 

13.42138 

112 

7.94968 

156 

10.71698 

113 

8.01257 

157 

10.77987 

200 

13.48427 

114 

8.07547 

158 

10.84276 

201 

13.54716 

115 

8.13836 

159 

10.90566 

202 

13.61006 

116 

8.20125 

203 

13.67295 

117 

8.26415 

160 

10.96855 

204 

13.73584 

118 

8.32704 

161 

11.03144 

205 

13.79874 

119 

8.38993 

162 

11.09433 

206 

13.86163 

163 

11.15723 

207 

13.92452 

120 

8.45283 

164 

11.22012 

208 

13.98742 

121 

8.51572 

165 

11.28301 

209 

14.05031 

122 

8.57861 

166 

11.34591 

123 

8.64150 

167 

11.40880, 

210 

14.11320 

124 

8.70440 

168 

11.47169 

211 

14.17610 

125 

8.76729 

169 

11.53459 

212 

14.23899 

126 

8.83018 

213 

14.30188 

127 

8.89308 

170 

11.59748 

214 

14.36477 

128 

8.95579 

171 

11.66037 

215 

14.42767 

129 

9.01886 

172 

11.72327 

216 

14.49056 

173 

11.78616 

217 

14.55345 

130 

9.08176 

174 

11.84905 

218 

14.61635 

131 

9.14465 

175 

11.91194 

219 

14.67924 

132 

9.20754 

176 

11.97484 

133 

9.27044 

177 

12.03773 

220 

14.74213 

134 

9.33333 

178 

12.10062 

221 

14.80503 

135 

9.39622 

179 

12.16352 

222 

14.86792 

136 

9.45911 

223 

14.93081 

137 

9.52201 

180 

12.22641 

224 

14.99371 

138 

9.58490 

181 

12.28930 

225 

15.05660 

139 

9.64779 

182 

12.35220 

226 

15.11949 

183 

12.41509 

227 

15.18238 

140 

9.71069 

184 

12.47798 

228 

15.24528 

141 

9.77358 

185 

12.54088 

229 

15.30817 

142 

9.83647 

186 

12.60377 

143 

9.89937 

187 

12.66666 

230 

15.37106 

144 

9.96226 

188 

12.72955 

231 

15.43396 

1  i/2-Pound  Multipliers—  (Continued) 


GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per'Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

232 

15.49685 

276 

18.26415 

320 

21.03144 

233 

15.55974 

277 

18.32704 

321 

21.09433 

234 

15.62264 

278 

18.38993 

322 

21.15723 

235 

15.68553 

279 

18.45282 

323 

21.22012 

236 

15.74842 

324 

21.28301 

237 

15.81132 

280 

18.51572 

325 

21.34591 

238 

15.87421 

281 

18.57861 

326 

21.40880 

239 

15.93710 

282 

18.64150 

327 

21.47169 

283 

18.70440 

328 

21.53459 

240 

16.00000 

284 

18.76729 

329 

21.59748 

241 

16.06289 

285 

18.83018 

242 

16.12578 

286 

18.89308 

330 

21.66037 

243 

16.18867 

287 

18.95597 

331 

21.72327 

244 

16.25157 

288 

19.01886 

332 

21.78616 

245 

16.31446 

289 

19.08176 

333 

21.84905 

246 

16.37735 

334 

21.91194 

247 

16.44025 

290 

19.14465 

335 

21.97484 

248 

16.50314 

291 

19.20754 

336 

22.03773 

249 

16.56603 

292 

19.27044 

337 

22.10062 

293 

19.33333 

338 

22.16352 

250 

16.62893 

294 

19.39622 

339 

22.22641 

251 

16.69182 

295 

19.45911 

252 
253 
254 
255 
256 
257 
258 
259 

260 
261 

16.75471 
16.81760 
16.88050 
16.94339 
17.00628 
17.06918 
17.13207 
17.19496 

17.25786 
17.32075 

296 
297 
298 
299 

300 
301 
302 
303 
304 
305 

19.52201 
19.58490 
19.64779 
19.71069 

19.77358 
19.83647 
19.89937 
19.96226 
20.02515 
20.08805 

340 

341 
342 
343 
344 
345 
346 
347 
348 
349 

22.28930 
22.35220 
22.41509 
22.47798 
22.54088 
22.60377 
22.66666 
22.72955 
22.79245 
22.85534 

262 

17.38364 

306 

20.15094 

263 

17.44654 

307 

20.21383 

350 

22.91823 

264 

17.50943 

308 

20.27672 

351 

22.98113 

265 

17.57232 

309 

20.33962 

352 

23.04402 

266 

17.63521 

353 

23.10691 

267 

17.69811 

310 

20.40251 

354 

23.16981 

268 

17.76100 

311 

20.46540 

355 

23.23270 

269 

17.82389 

312 

20.52830 

356 

23.29559 

313 

20.59119 

357 

23.35849 

270 

17.88679 

314 

20.65408 

358 

23.42138 

271 

17.94968 

315 

20.71698 

359 

23.48427 

272 

18.01257 

316 

20.77987 

273 

18.07547 

317 

20.84276 

360 

23.54716 

274 

18.13836 

318 

20.90566 

361 

23.61006 

275 

18.20125 

319 

20.96855 

362 

23.67295 

1 3/2-Pound  Multipliers —  (Continued) 


GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

363 

23.73584 

409 

26.62893 

455 

29.52201 

364 
365 
366 
367 
368 
369 

23.79874 
23.86163 
23.92452 
23.98742 
24.05031 
24.11320 

410 

411 
412 
413 
414 
415 

26.69182 
26.75471 
26.81760 
26.88050 
26.94339 
27.00628 

456 
457 
458 
459 

460 
461 

29.58490 
29.64779 
29.71069 
29.77358 

29.83647 
29.89937 

370 

24.17610 

416 

27.06918 

462 

29.96226 

371 

24.23899 

417 

27.13207 

463 

30.02515 

372 

24.30188 

418 

27.19496 

464 

30.08804 

373 

24.36477 

419  . 

27.25786 

465 

30.15094 

374 
375 
376 
377 

24.42767 
24.49056 
24.55345 
24.61635 

420 

421 
422 
423 

27.32075 
27.38364 
27.44654 
27.50943 

466 
467 
468 
469 

30.21383 
30.27672 
30.33962 
30.40251 

378 

24.67924 

424 

27.57232 

470 

30.46540 

379 

24.74213 

425 

27.63521 

471 

30.52830 

380 
381 
382 
383 
384 
385 
386 
387 

24.80503 
24.86792 
24.93081 
24.99371 
25.05660 
25.11949 
25.18238 
25.24528 

426 
427 
428 
429 

430 
431 
432 
433 

27.69811 
27.76100 
27.82389 
27.88679 

27.94968 
28.01257 
28.07547 
28.13836 

472 
473 
474 
475 
476 
477 
478 
479 

30.59119 
30.65408 
30.71698 
30.77987 
30.84276 
30.90566 
30.96855 
31.03144 

388 

25.30817 

434 

28.20125 

480 

31.09433 

389 

25.37106 

435 

28.26415 

481 

31.15723 

390 
391 
392 
393 
394 
395 
396 
397 

25.43396 
25.49685 
25.55974 
25.62264 
25.68553 
25.74842 
25.81132 
25.87421 

436 
437 
438 
439 

440 
441 
442 
443 

28.32704 
28.38993 

28.45282 
28.51572 

28.57861 
28.64150 
28.70440 
28.76729 

482 
483 
484 
485 
486 
487 
488 
489 

31.22012 
31.28301 
31.34591 
31.40880 
31.47169 
31.53459 
31.59748 
31.66037 

398 

25.93710 

444 

28.83018 

490 

31.72327 

399 

25.99999 

445 

28.89308 

491 

31.78616 

400 

26  06289 

446 

28.95597 

492 

31.84905 

401 
402 
403 
404 
405 
406 
407 

26^12578 
26.18867 
26.25157 
26.31446 
26.37735 
26.44025 
26.50314 

447 
448 
449 

450 
451 
452 
453 

29.01886 
29.08176 
29.14465 

29.20754 
29.27043 
29.33333 
29.39622 

493 
494 
495 
496 
497 
498 
499 

31.91194 
31.97484 
32.03773 
32.10062 
32.16352 
32.22641 
32.28930 

408 

26.56603 

454 

29.45911 

500 

32.35220 

Multipliers  for  Reducing  Gas  Volumes  or  Meter  Readings  to 
a  Pressure  Base  of  2  Pounds  Above  Atmospheric  Pressure 


GAUGE 
PRESSURE 
Inches  of 
Mercury 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

-25 

.12984 

7y2 

1.33536 

34 

2.95121 

-24 

.15977 

8 

1.36585 

35 

3.01219 

-23 

.18970 

gi^ 

1.39634 

36 

3.07316 

-22 

.21962 

9 

1.42682 

37 

3.13414 

-21 

.24955 

9^2 

1.45731 

38             3.19511 

-20 

.27948 

39 

3.25609 

-19 

.30941 

10 

1.48780 

-18 

.33934 

103/2 

1.51829 

40 

3.31707 

-17 

.36927 

11 

1.54877 

41 

3.37804 

-16 

.39919 

ll/^ 

1.57926 

42 

3.43902 

12 

1.60975 

43 

3.50000 

-15 

.42912 

123/2 

1.64024 

44 

3.56097 

-14 

.45905 

13 

1.67073 

45 

3.62194 

-13 

.48898 

133/£ 

1.70121 

46 

3.68292 

-12 

.51891 

14 

1.73170 

47 

3.74390 

-11 

•     .54883 

143/£ 

1.76219 

48 

3.80487 

-10 

.57876 

49 

3.86585 

-  9 

.60869 

15 

1.79268 

-  8 

.63862 

153/£ 

1.82316 

50 

3.92682 

-  7 

.66855 

16 

1.85365 

51 

3.98780 

-  6 

.69847 

163/2 

1.88414 

52 

4.04877 

17 

1.91463 

53 

4.10975 

-  5 

.72840 

173/2 

1.94512 

54 

4.17072 

—  4 

.75833 

18 

1.97560 

55 

4.23170 

-  3 

.78826 

183/£ 

2.00609 

56 

4.29267 

-  2 

.81819 

19 

2.03658 

57 

4.35365 

-  1 

.84812 

19/^ 

2.06707 

58 

4.41463 

Atmos. 

.87804 

59 

4.47560 

20 

2.09755 

Lb. 
per  Sq.  In. 

20^ 
21 

2.12804 
2.15853 

60 
61 

4.53658 
4.59755 

.25 

.89329 

2.18902 

62 

4.65853 

.5 

.90853 

22  2 

2.21951 

63 

4.71950 

.625 

.91615 

223^ 

2.25000 

64 

4.78048 

1. 

.93902 

23 

2.28048 

65             4.84145 

1/12 

.96951 

233/4 

2.31097 

66 

4.90243 

2 

1.00000 

24  " 

2.34146 

67 

4.96341 

2/^ 

1.03048 

243^ 

2.37194 

68 

5.02438 

3 

1.06097 

69             5.08536 

33^ 

1.09146 

25 

2.40243 

4 

1.12195 

26 

2.46341 

70 

5.14633 

43/£ 

1.15243 

27 

2.52438 

71 

5.20731 

28 

2.58536    !j          72 

5.26828 

5 

1.18292 

29 

2.64633     !          73 

5.32926 

5^2 

1.21341 

30 

2.70731 

74 

5.39023 

6 

1.24390 

31 

2.76829 

75 

5.45121 

63^ 

1.27438 

32 

2.82926 

76 

5.51219 

7 

1.30487 

33 

2.89024 

77 

5.57316 

— Means  "Vacuum"  or   minus  pressure. 

50 


2-Pound  Multipliers — (Continued) 


GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

78 

5.63414 

121 

8.25609 

165 

10.93901 

79 

5.69511 

122 

8.31706 

166 

11.00000 

123 

8.37804 

167 

11.06096 

80 

5.75609 

124 

8.43901 

168 

11.12194 

81 

5.81706 

125 

8.50000 

169 

11.18291 

82 

5.87804 

126 

8.56096 

83 

5.93901 

127 

8.62194 

170 

11.24390 

84 

6.00000 

128 

8.68291 

171 

11.30486 

85 

6.06097 

129 

8.74390 

172 

11.36584 

86 

6.12194 

173 

11.42681 

87 

6.18292 

130 

8.80487 

174 

11.48780 

88 

6.24390 

131 

8.86584 

175 

11.54877 

89 

6.30487 

132 

8.92682 

176 

11.60974 

133 

8.98789 

177 

11.67072 

90 

6.36584 

134 

9.04877 

178 

11.73170 

91 

6.42682 

135 

9.10974 

179 

11.79267 

92 

6.48780 

136 

9.17072 

93 

6.54877 

137 

9.23170 

180 

11.85364 

94 

6.60975 

138 

9.29267 

181 

11.91462 

95 

6.67072 

139 

9.35365 

182 

11.97560 

96 

6.73170 

183 

12.03657 

97 

6.79267 

140 

9.41462 

184 

12.09755 

98 

6.85365 

141 

9.47560 

185 

12.15852 

99 

6.91462 

142 

9.53657 

186 

12.21950 

143 

9.59755 

187 

12.28047 

100 

6.97560 

144 

9.65852 

188 

12.34145 

101 

7.03657 

145 

9.71950 

189 

12.40242 

102 

7.09755 

146 

9.78047 

103 

7.15853 

147 

9.84145 

190 

12.46340 

104 

7.21950 

148 

9.90243 

191 

12.52437 

105 

7.28048 

149 

9.96340 

192 

12.58535 

106 

7.34145 

193 

12.64633 

107 

7.40243 

150 

10.02438 

194 

12.70730 

108 

7.46340 

151 

10.08535 

195 

12.76828 

109 

7.52438 

152 

10.14633 

196 

12.82925 

153 

10.20730 

197 

12.89023 

110 

7.58535 

154 

10.26828 

198 

12.95120 

111 

7.64633 

155 

10.32925 

199 

13.01218 

112 

7.70731 

156 

10.39023 

113 

7.76828 

157 

10.45121 

200 

13.07315 

114 

7.82926 

158 

10.51218 

201 

13.13414 

115 

7.89023 

159 

10.57316 

202 

13.19512 

116 

7.95121 

203 

13.25609 

117 

8.01218 

160 

10.63413 

204 

13.31707 

118 

8.07316 

161 

10.69511 

205 

13.37804 

119 

8.13413 

162 

10.75608 

206 

13.43902 

163 

10.81706 

207 

13.50000 

120 

8.19511 

164 

10.87803 

208 

13.56097 

51 


2-Pound  Multipliers—  (Continued) 


GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
>er  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

209 

13.62195 

252 

16.24390 

296 

18.92682 

253 

16.30487 

297 

18.98780 

210 

13.68292 

254 

16.36585 

298 

19.04878 

211 

13.74390 

255 

16.42682 

299 

19.10975 

212 

13.80487 

256 

16.48780 

213 

13.86585 

257 

16.54878 

300 

19.17073 

214 

13.92682 

258 

16.60975 

301 

19.23170 

215 

13.98780 

259 

16.67073 

302 

19.29268 

216 

14.04878 

303 

19.35365 

217 

14.10975 

260 

16.73170 

304 

19.41463 

218 

14.17073 

261 

16.79268 

305 

19.47560 

219 

14.23170 

262 

16.85365 

306 

19.53658 

263 

16.91463 

307 

19.59756 

220 

14.29268 

264 

16.97560 

308 

19.65853 

221 

14.35365 

265 

17.03658 

309 

19.71951 

222 

14.41463 

266 

17.09756 

223 

14.47560 

267 

17.15853 

310 

19.78048 

224 

14.53658 

268 

17.21951 

311 

19.84146 

225 

14.59756 

269 

17.28048 

312 

19.90243 

226 

14.65853 

313 

19.96341 

227 

14.71951 

270 

17.34146 

314 

20.02439 

228 

14.78048 

271 

17.40243 

315 

20.08536 

229 

14.84146 

272 

17.46341 

316 

20.14634 

273 

17.52439 

317 

20.20731 

230 

14.90243 

274 

17.58536 

318 

20.26829 

231 

14.96341 

275 

17.64634 

319 

20.32926 

232 

15.02439 

276 

17.70731 

233 

15.08536 

277 

17.76829 

320 

20.39024 

234 

15.14634 

278 

17.82926 

321 

20.45121 

235 

15.20731 

279 

17.89024 

322 

20.51219 

236 

15.26829 

323 

20.57317 

237 

15.32926 

280 

17.95121 

324 

20.63414 

238 

15.39024 

281 

18.01219 

325 

20.69512 

239 

15.45121 

282 

18.07317 

326 

20.75609 

283 

18.13414 

327 

20.81707 

240 

15.51219 

284 

18.19512 

328 

20.87804 

241 

15.57317 

285 

18.25609 

329 

20.93902 

242 

15.63414 

286 

18.31707 

243 

15.69512 

287 

18.37804 

330 

21.00000 

244 

15.75609 

288 

18.43902 

331 

21.06097 

245 

15.81707 

289 

18.50000 

332 

21.12195 

246 

15.87804 

333 

21.18292 

247 

15.93902 

290 

18.56097 

334 

21.24390 

248 

16.00000 

291 

18.62195 

335 

21.30487 

249 

16.06097 

292 

18.68292 

336 

21.36585 

293 

18.74390 

337 

21.42682 

250 

16.12195 

294 

18.80487 

338 

21.48780 

251 

16.18292 

295 

18.86585 

339 

21.54878 

52 


2-Pound  Multipliers — (Continued) 


GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

340 

21.60975 

384 

24.29268 

428 

26.97560 

341 

21.67073 

385 

24.35365 

429 

27.03658 

342 

21.73170 

386 

24.41463 

343 

21.79268 

387 

24.47560 

430 

27.09756 

344 

21.85365 

388 

24.53658 

431 

27.15853 

345 

21.91463 

389 

24.59756 

432 

27,21951 

346 

21.97560 

433 

27.28048 

347 

22.03658 

390 

24.65853 

434 

27.34146 

348 

22.09756 

391 

24.71951 

435 

27.40243 

349 

22.15853 

392 

24.78048 

436 

27.46341 

393 

24.84146 

437 

27.52439 

350 

22.21951 

394 

24.90243 

438 

27.58536 

351 

22.28048 

395 

24.96341 

439 

27.64634 

352 

22.34146 

396 

25.02439 

353 

22.40243 

397 

25.08536 

440 

27.70731 

354 

22.46341 

398 

25.14634 

441 

27.76829 

355 

22.52439 

399 

25.20731 

442 

27.82926 

356 

22.58536 

443 

27.89024 

357 

22.64634 

400 

25.26829 

444 

27.95121 

358 

22.70731 

401 

25.32926 

445 

28.01219 

359 

22.76829 

402 

25.39024 

446 

28.07317 

403 

25.45121 

447 

28.13414 

360 

22.82926 

404 

25.51219 

448 

28.19512 

361 

22.89024 

405 

25.57317 

449 

28.25609 

362 

22.95121 

406 

25.63414 

363 

23.01219 

407 

25.69512 

450 

28.31707 

364 

23.07317 

408 

25.75609 

451 

28.37804 

365 

23.13414 

409 

25.81707 

452 

28.43902 

366 

23.19512 

453 

28.50000 

367 

23.25609 

410 

25.87804 

454 

28.56097 

368 

23.31707 

411 

25.93902 

455 

28.62195 

369 

23.37804 

412 

26.00000 

456 

28.68292 

413 

26.06097 

457 

28.74390 

370 

23.43902 

414 

26.12195 

458 

28.80487 

371 

23.50000 

415 

26.18292 

459 

28.86585 

372 

23.56097 

416 

26.24390 

373 

23.62195 

417 

26.30487 

460 

28.92682 

374 

23.68292 

418 

26.36585 

461 

28.98780 

375 

23.74390 

419 

26.42682 

462 

29.04878 

376 

23.80487 

463 

29.10975 

377 

23.86585 

420 

26.48780 

464 

29.17073 

378 

23.92682 

421 

26.54878 

465 

29.23170 

379 

23.98780 

422 

26.60975 

466 

29.29268 

423 

26.67073 

467 

29.35365 

380 

24.04878 

424 

26.73170 

468 

29.41463 

381 

24.10975 

425 

26.79268 

469 

29.47560 

382 

24.17073 

426 

26.85365 

383    1  24.23170 

427 

26.91463 

470 

29.53658 

53 


2-Pound  Multipliers — (Continued) 


GAUGE 
PRESSURE 

Multiplier 

GAUGE 
PRESSURE 

Multiplier 

GAUGE 
PRESSURE 

Multiplier 

Lb. 
per  Sq.  In. 

or 
Density 

Lb. 

per  Sq.  In. 

or 
Density 

Lb. 

per  Sq.  In. 

or 
Density 

471 

29.59756 

481 

30.20731 

491 

30.81707 

472 

29.65853 

482 

30.26829 

492 

30.87804 

473 

29.71951 

483 

30.32926 

493 

30.93902 

474 

29.78048 

484 

30.39024 

494 

31.00000 

475 

29.84146 

485 

30.45121 

495 

31.06097 

476 

29.90243 

486 

30.51219 

496 

31.12195 

477 

29.96341 

487 

30.57317 

497 

31.18292 

478 

30.02439 

488 

30.63414 

498 

31.24390 

479 

30.08536 

489 

30.69512 

499 

31.30487 

480 

30.14634 

490 

30.75609 

500 

31.36585 

54 


Multipliers  for  Reducing  Gas  Volumes  or  Meter  Readings  to 
a  Pressure  Base  of  3  Pounds  Above  Atmospheric  Pressure 


GAUGE 
PRESSURE 
Inches  of 
Mercury 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

-^5 

.12238 

11 

.45977 

55 

3.98850 

-24 

.15059 

12 

.51724 

56 

4.04597 

-23 

.17879 

13 

.57471 

57 

4.10344 

-22 

.20700 

14 

.63218 

58 

4.16091 

-21 

.23521 

15 

.68965 

59 

4.21839 

-20 

.26342 

16 

1.74712 

-19 

.29163 

17 

1.80459 

60 

4.27586 

-18 

.31983 

18 

1.86206 

61 

4.33333 

-17 

.34804 

19 

1.91954 

62 

4.39080 

-16 

.37625 

63 

4.44827 

20 

1.97701 

64 

4.50574 

-15 

.40446 

21 

2.03448 

65 

4.56321 

-14 

.43267 

22 

2.09195 

66 

4.62068 

-13 

.46088 

23 

2.14942 

67 

4.67816 

-12 

.48908 

24 

2.20689 

68 

4.73563 

-11 

.51729 

25 

2.26436 

69 

4.79310 

-10 

.54550 

26 

2.32183 

-  9 

.57371 

27 

2.37931 

70 

4.85057 

-  8 

.60192 

28 

2.43678 

71 

4.90804 

—  7 

.63012 

29 

2.49425 

72 

4.96551 

-  6 

.65833 

73 

5.02298 

30 

2.55172 

74 

5.08045 

-  5 

.68654 

31 

2.60919 

75 

5.13793 

-  4 

.71475 

32 

2.66666 

76 

5.19540 

-  3 

.74296 

33 

2.72413 

77 

5.25287 

-  2 

.77116 

34 

2.78160 

78 

5.31034 

-  1 

.79937 

35 

2.83908 

79 

5.36781 

Atmos. 

.82758 

36 

2.89655 

T  K 

37 

2.95402 

80 

5.42528 

IvD. 

per  Sq.  In. 

38 
39 

3.01149 
3.06896 

81 
82 

5.48275 
5.54022 

.25 

.84195 

83 

5.59770 

.5 

.85632 

40 

3.12643 

84 

5.65517 

.75 

.87068 

41 

3.18390 

85 

5.71264 

1. 

.88505 

42 

3.24137 

86 

5.77011 

1.5 

.91379 

43 

3.29885 

87 

5.82758 

2. 

.94252 

44 

3.35632 

88 

5.88505 

2.5 

.97126 

45 

3.41379 

89 

5.94252 

3. 

1.0000 

46 

3.47126 

3 

1.00000 

47 

3.52873 

90 

6.00000 

4 

1.05747 

48 

3.58620 

91 

6.05747 

49 

3.64367 

92 

6.11494 

5 

1.11494 

93 

6.17241 

6 

1.17241 

50 

3.70114 

94 

6.22988 

7 

1.22988 

51 

3.75862 

95 

6.28735 

8 

1.28735 

52 

3.81609 

96 

6.34482 

9 

1.34482 

53 

3.87356 

97 

6.40229 

10 

1.40229 

54 

3.93103 

98 

6.45977 

— Means  "Vacuum"   or  minus  pressure. 

55 


3-Pound  Multipliers — (Continued) 


GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

99 

6.51724 

142 

8.98850 

186 

11.51724 

143 

9.04597 

187 

11.57471 

100 

6.57471 

144 

9.10344 

188 

11.63218 

101 

6.63218 

145 

9.16091 

189 

11.68965 

102 

6.68965 

146 

9.21839 

103 

6.74712 

147 

9.27586 

190 

11.74712 

104 

6.80459 

148 

9.33333 

191 

11.80459 

105 

6.86206 

149 

9.39080 

192 

11.86206 

106 

6.91954 

193 

11.91954 

107 

6.97701 

150 

9.44827 

194 

11.97701 

108 

7.03448 

151 

9.50574 

195 

12.03448 

109 

7.09195 

152 

9.56321 

196 

12.09195 

153 

9.62068 

197 

12.14942 

110 

7.14942 

154 

9.67816 

198 

12.20689 

111 

7.20689 

155 

9.73563 

199 

12.26436 

112 

7.26436 

156 

9.79310 

113 

7.32183 

157 

9.85057 

200 

12.32183 

114 

7.37931 

158 

9.90804 

201 

12.37931 

115 

7.43678 

159 

9.96551 

202 

12.43678 

116 

7.49425 

203 

12.49425 

117 

7.55172 

160 

10.02298 

204 

12.55172 

118 

7.60919 

161 

10.08045 

205 

12.60919 

119 

7.66666 

162 

10.13793 

206 

12.66666 

163 

10.19540 

207 

12.72413 

120 

7.72413 

164 

10.25287 

208 

12.78160 

121 

7.78160 

165 

10.31034 

209 

12.83908 

122 

7.83908 

166 

10.36781 

123 

7.89655 

167 

10.42528 

210 

12.89655 

124 

7.95402 

168 

10.48275 

211 

12.95402 

125 

8.01149 

169 

10.54022 

212 

13.01149 

126 

8.06896 

213 

13.06896 

127 

8.12643 

170 

10.59770 

214 

13.12643 

128 

8.18390 

171 

10.65517 

215 

13.18390 

129 

8.24137 

172 

10.71264 

216 

13.24137 

173 

10.77011 

217 

13.29885 

130 

8.29885 

174 

10.82758 

218 

13.35632 

131 

8.35632 

175 

10.88505 

219 

13.41379 

132 

8.41379 

176 

10.94252 

133 

8.47126 

177 

11.00000 

220 

13.47126 

134 

8.52873 

178 

11.05747 

221 

13.52873 

135 

8.58620 

179 

11.11494 

222 

13.58620 

136 

8.64367 

223 

13.64367 

137 

8.70114 

180 

11.17251 

224 

13.70114 

138 

8.75862 

181 

11.22988 

225 

13.75862 

139 

8.81609 

182 

11.28735 

226 

13.81609 

183 

11.34482 

227 

13.87356 

140 

8.87356 

184 

11.40229 

228 

13.93103 

141 

8.93103 

185 

11.45977 

229 

13.98850 

56 


3-Pound  Multipliers — (Continued) 


GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

230 

14.04597 

274 

16.57471 

318 

19.10344 

231 

14.10344 

275 

16.63218 

319 

19.16091 

232 

14.16091 

276 

16.68965 

233 

14.21839 

277 

16.74712 

320 

19.21839 

234 

14.27586 

278 

16.80459 

321 

19.27586 

235 

14.33333 

279 

16.86206 

322 

19.33333 

236 

14.39080 

323 

19.39080 

237 

14.44827 

280 

16.91954 

324 

19.44827 

238 

14.50574 

281 

16.97701 

325 

19.50574 

239 

14.56321 

282 

17.03448 

326 

19.56321 

283 

17.09195 

327 

19.62068 

240 

14.62068 

284 

17.14942 

328 

19.67816 

241 

14.67816 

285 

17.20689 

329 

19.73563 

242 

14.73563 

286 

17.26436 

243 

14.79310 

287 

17.32183 

330 

19.79310 

244 

14.85057 

288 

17.37931 

331 

19.85057 

245 

14.90804 

289 

17.43678 

332 

19.90804 

246 

14.96551 

333 

19.96551 

247 

15.02298 

290 

17.49425 

334 

20.02298 

248 

15.08045 

291 

17.55172 

335 

20.08045 

249 

15.13793 

292 

17.60919 

336 

20.13793 

293 

17.66666 

337 

20.19540 

250 

15.19540 

294 

17.72413 

338 

20.25287 

251 

15.25287 

295 

17.78160 

339 

20.31034 

252 

15.31034 

296 

17.83908 

253 

15.36781 

297 

17.89655 

340 

20.36781 

254 

15.42528 

298 

17.95402 

341 

20.42528 

255 

15.48275 

299 

18.01149 

342 

20.48275 

256 

15.54022 

343 

20.54022 

257 

15.59770 

300 

18.06896 

.  344 

20.59770 

258 

15.65517 

301 

18.12643 

345 

20.65517 

259 

15.71264 

302 

18.18390 

346 

20.71264 

303 

18.24137 

347 

20.77011 

260 

15.77011 

304 

18.29885 

348 

20.82758 

261 

15.82758 

305 

18.35632 

349 

20.88505 

262 

15.88505 

306 

18.41379 

263 

15.94252 

307 

18.47126 

350 

20.94252 

264 

16.00000 

308 

18.52873 

351 

21.00000 

265 

16.05747 

309 

18.58620 

352 

21.05747 

266 

16.11494 

353 

21.11494 

267 

16.17241 

310 

18.64367 

354 

21.17241 

268 

16.22988 

311 

18.70114 

355 

21.22988 

269 

16.28735 

312 

18.75862 

356 

21.28735 

313 

18.81609 

357 

21.34482 

270 

16.34482 

314 

18.87356 

358 

21.40229 

271 

16.40229 

315 

18.93103 

359 

21.45976 

272 

16.45977 

316 

18.98850 

273 

16.51724 

317 

19.04597 

360 

21.51724 

3-Pound  Multipliers — (Continued) 


GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Destiny 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

GAUGE 
PRESSURE 
Lb. 
per  Sq.  In. 

Multiplier 
or 
Density 

361 

21.57471 

405 

24.10344 

449 

26.63218 

362 

21.63218 

406 

24.16091 

363 

21.68965 

407 

24.21839 

450 

26.68965 

364 

21.74712 

408 

24.27586 

451 

26.74712 

365 

21.80459 

409 

24.33333 

452 

26.80459 

366 

21.86206 

453 

26.86206 

367 

21.91954 

410 

24.39080 

454 

26.91954 

368 

21.97701 

411 

24.44827 

455 

26.97701 

369 

22.03448 

412 

24.50574 

456 

27.03448 

413 

24.56321 

457 

27.09195 

370 

22.09195 

414 

24.62068 

458 

27.14942 

371 

22.14942 

415 

24.67816 

459 

27.20689 

372 

22.20689 

416 

24.73563 

373 

22.26438 

417 

24.79310 

460 

27.26436 

374 

22.32183 

418 

24.85057 

461 

27.32183 

375 

22.37931 

419 

24.90804 

462 

27.37931 

376 

22.43678 

463 

27.43678 

377 

22.49425 

420 

24.96551 

464 

27.49425 

378 

22.55172 

421 

25.02298 

465 

27.55172 

379 

422 

25.08045 

466 

27.60919 

22.60919 

423 

25.13793 

467 

27.66666 

380 

22.66666 

424 

25.19540 

468 

27.72413 

381 

22.72413 

425 

25.25287 

469 

27.78160 

382 

22.78160 

426 

25.31034 

383 

22.83908 

427 

25.36781 

470 

27.83908 

384 

22.89655 

428 

25.42528 

471 

27.89655 

385 

22.95402 

429 

25.48275 

472 

27.95402 

386 

23.01149 

473 

28.01149 

387 

23.06896 

430 

25.54022 

474 

28.06896 

388 

23.12643 

431 

25.59770 

475 

28.12643 

389 

23.18390 

432 

25.65517 

476 

28.18390 

433 

25.71264 

477 

28.24137 

390 

23.24137 

434 

25.77011 

478 

28.29885 

391 

23.29885 

435 

25.82758 

479 

28.35632 

392 

23.35632 

436 

25.88505 

393 

23.41379 

437 

25.94252 

480 

28.41379 

394 

23.47126 

438 

26.00000 

481 

28.47126 

395 

23.52873 

439 

26.05747 

482 

28.52873 

396 

23.58620 

483 

28.58620 

397 

23.64367 

440 

26.11494 

484 

28.64367 

398 

23.70114 

441 

26.17241 

485 

28.70114 

399 

23.75862 

442 

26.22988 

486 

28.75862 

443 

26.28735 

487 

28.81609 

400 

23.81609 

444 

26.34482 

488 

28.87356 

401 

23.87356 

445 

26.40229 

489 

28.93103 

402 

23.93103 

446 

26.45977 

403 

23.98850 

447 

26.51724 

490 

28.98850 

404 

24.04597 

448 

26.57471 

491 

29.04597 

58 


3-Pound  Multipliers— '(Continued.} 


GAUGE 
PRESSURE 

Multiplier 

GAUGE 
PRESSURE 

Multiplier 

GAUGE 
PRESSURE 

Multiplier 

Lb. 

per  Sq.  In. 

or 
Density 

Lb. 
per  Sq.  In. 

or 
Density 

Lb. 
per  Sq.  In. 

or 
Density 

492 

29.10344 

495 

29.27586 

498 

29.44827 

493 

29.16091 

496 

29.33333 

499 

29.50574 

494 

29.21839 

497 

29.39080    t 

500 

29.56321 

HAND-BOOK  OK 

NATURAL  GAS 


By  HENRY  P.  WESTCOTT 

MEMBER     A .     S .     M  .     E .     AND 
NATURAL     GAS     ASSOCIATION 


\  PRACTICAL  BOOK  for  practical  workers, 
^*-  based  on  many  years  of  experience  of  scores 
of  active  gas  men,  and  covering  the  entire  subject 
of  Natural  Gas  from  geology  to  the  consumer. 

—  .»*. 

Containing 

188  valuable  Tables  on  Pipe  Line  Capacities,  etc. 

Nearly  160  Illustrations  from  photographs  and  drawings- 

Various   Formulae   and   Tables   of   complete   mathematical 

calculations  worked  out  in  detail. 

Everything  Regarding  Natural  Gas  from  the  Gas  Sand  to 
the  Gas  Range. 


Pocket  Size,  520  pages  (4f7£").  Clearly 
printed  from  new  type  on  specially 
made  paper  restful  to  the  eye.  Silk  cloth, 
title  in  gold,  $3.50.  Postpaid. 


PUBLISHED    BY 

METRIC  METAL  WORKS, 

ERIE,    PENN'A,    U.    S.    A. 


TK 
456251 


• 


UNIVERSITY  QF  CALIFORNIA  LIBRARY 


